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Castelli F, Consolati G. Modelling Annihilation Properties of Positronium Confined in Nanoporous Materials: A Review. Int J Mol Sci 2024; 25:3692. [PMID: 38612506 PMCID: PMC11011886 DOI: 10.3390/ijms25073692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/19/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
Positronium (Ps) is a valuable probe to investigate nanometric or sub-nanometric cavities in non-metallic materials, where Ps can be confined. Accessible experimental measurements concern the lifetime of trapped Ps, which is largely influenced by pick-off processes, depending on the size of the cavity as well as on the density of the electrons belonging to the surface of the host trap. Another relevant physical quantity is the contact density, that is the electron density at the positron position, which is usually found to be well below the vacuum value. Here, we review the principal models that have been formulated to account and explain for these physical properties of confined Ps. Starting with models, treating Ps as a single particle formulated essentially to study pick-off, we go on to describe more refined two-particle models because a two-body model is the simplest approach able to describe any change in the contact density, observed in many materials. Finally, we consider a theory of Ps annihilation in nanometric voids in which the exchange correlations between the electron of Ps and the outer electrons play a fundamental role. This theory is not usually taken into account in the literature, but it has to be considered for a correct theory of pick-off annihilation processes.
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Affiliation(s)
- Fabrizio Castelli
- Department of Physics “Aldo Pontremoli”, Università degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano, Via Celoria 16, 20133 Milano, Italy;
| | - Giovanni Consolati
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano, Via Celoria 16, 20133 Milano, Italy;
- Department of Aerospace Science and Technology, Politecnico di Milano, Via La Masa 34, 20156 Milano, Italy
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Glöggler LT, Gusakova N, Rienäcker B, Camper A, Caravita R, Huck S, Volponi M, Wolz T, Penasa L, Krumins V, Gustafsson FP, Comparat D, Auzins M, Bergmann B, Burian P, Brusa RS, Castelli F, Cerchiari G, Ciuryło R, Consolati G, Doser M, Graczykowski Ł, Grosbart M, Guatieri F, Haider S, Janik MA, Kasprowicz G, Khatri G, Kłosowski Ł, Kornakov G, Lappo L, Linek A, Malamant J, Mariazzi S, Petracek V, Piwiński M, Pospíšil S, Povolo L, Prelz F, Rangwala SA, Rauschendorfer T, Rawat BS, Rodin V, Røhne OM, Sandaker H, Smolyanskiy P, Sowiński T, Tefelski D, Vafeiadis T, Welsch CP, Zawada M, Zielinski J, Zurlo N. Positronium Laser Cooling via the 1^{3}S-2^{3}P Transition with a Broadband Laser Pulse. Phys Rev Lett 2024; 132:083402. [PMID: 38457696 DOI: 10.1103/physrevlett.132.083402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 01/18/2024] [Indexed: 03/10/2024]
Abstract
We report on laser cooling of a large fraction of positronium (Ps) in free flight by strongly saturating the 1^{3}S-2^{3}P transition with a broadband, long-pulsed 243 nm alexandrite laser. The ground state Ps cloud is produced in a magnetic and electric field-free environment. We observe two different laser-induced effects. The first effect is an increase in the number of atoms in the ground state after the time Ps has spent in the long-lived 2^{3}P states. The second effect is one-dimensional Doppler cooling of Ps, reducing the cloud's temperature from 380(20) to 170(20) K. We demonstrate a 58(9)% increase in the fraction of Ps atoms with v_{1D}<3.7×10^{4} ms^{-1}.
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Affiliation(s)
- L T Glöggler
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - N Gusakova
- Physics Department, CERN, 1211 Geneva 23, Switzerland
- Department of Physics, NTNU, Norwegian University of Science and Technology, Trondheim, Norway
| | - B Rienäcker
- Department of Physics, University of Liverpool, Liverpool L69 3BX, United Kingdom
| | - A Camper
- Department of Physics, University of Oslo, Sem Sælandsvei 24, 0371 Oslo, Norway
| | - R Caravita
- TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
| | - S Huck
- Physics Department, CERN, 1211 Geneva 23, Switzerland
- Institute for Experimental Physics, Universität Hamburg, 22607 Hamburg, Germany
| | - M Volponi
- Physics Department, CERN, 1211 Geneva 23, Switzerland
- TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
- Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
| | - T Wolz
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - L Penasa
- TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
- Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
| | - V Krumins
- Physics Department, CERN, 1211 Geneva 23, Switzerland
- University of Latvia, Department of Physics Raina boulevard 19, LV-1586 Riga, Latvia
| | | | - D Comparat
- Université Paris-Saclay, CNRS, Laboratoire Aimé Cotton, 91405 Orsay, France
| | - M Auzins
- University of Latvia, Department of Physics Raina boulevard 19, LV-1586 Riga, Latvia
| | - B Bergmann
- Institute of Experimental and Applied Physics, Czech Technical University in Prague, Husova 240/5, 110 00 Prague 1, Czech Republic
| | - P Burian
- Institute of Experimental and Applied Physics, Czech Technical University in Prague, Husova 240/5, 110 00 Prague 1, Czech Republic
| | - R S Brusa
- TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
- Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
| | - F Castelli
- INFN Milano, via Celoria 16, 20133 Milano, Italy
- Department of Physics "Aldo Pontremoli," University of Milano, via Celoria 16, 20133 Milano, Italy
| | - G Cerchiari
- Institut für Experimentalphysik, University of Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
| | - R Ciuryło
- Institute of Physics, Faculty of Physics, Astronomy, and Informatics, Nicolaus Copernicus University in Torun, Grudziadzka 5, 87-100 Torun, Poland
| | - G Consolati
- INFN Milano, via Celoria 16, 20133 Milano, Italy
- Department of Aerospace Science and Technology, Politecnico di Milano, via La Masa 34, 20156 Milano, Italy
| | - M Doser
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - Ł Graczykowski
- Warsaw University of Technology, Faculty of Physics, ul. Koszykowa 75, 00-662 Warsaw, Poland
| | - M Grosbart
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - F Guatieri
- TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
- Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
| | - S Haider
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - M A Janik
- Warsaw University of Technology, Faculty of Physics, ul. Koszykowa 75, 00-662 Warsaw, Poland
| | - G Kasprowicz
- Warsaw University of Technology, Faculty of Electronics and Information Technology, ul. Nowowiejska 15/19, 00-665 Warsaw, Poland
| | - G Khatri
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - Ł Kłosowski
- Institute of Physics, Faculty of Physics, Astronomy, and Informatics, Nicolaus Copernicus University in Torun, Grudziadzka 5, 87-100 Torun, Poland
| | - G Kornakov
- Warsaw University of Technology, Faculty of Physics, ul. Koszykowa 75, 00-662 Warsaw, Poland
| | - L Lappo
- Warsaw University of Technology, Faculty of Physics, ul. Koszykowa 75, 00-662 Warsaw, Poland
| | - A Linek
- Institute of Physics, Faculty of Physics, Astronomy, and Informatics, Nicolaus Copernicus University in Torun, Grudziadzka 5, 87-100 Torun, Poland
| | - J Malamant
- Department of Physics, University of Oslo, Sem Sælandsvei 24, 0371 Oslo, Norway
| | - S Mariazzi
- TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
- Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
| | - V Petracek
- Czech Technical University, Prague, Brehova 7, 11519 Prague 1, Czech Republic
| | - M Piwiński
- Institute of Physics, Faculty of Physics, Astronomy, and Informatics, Nicolaus Copernicus University in Torun, Grudziadzka 5, 87-100 Torun, Poland
| | - S Pospíšil
- Institute of Experimental and Applied Physics, Czech Technical University in Prague, Husova 240/5, 110 00 Prague 1, Czech Republic
| | - L Povolo
- TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
- Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
| | - F Prelz
- INFN Milano, via Celoria 16, 20133 Milano, Italy
| | - S A Rangwala
- Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560080, India
| | - T Rauschendorfer
- Physics Department, CERN, 1211 Geneva 23, Switzerland
- Felix Bloch Institute for Solid State Physics, Universität Leipzig, 04103 Leipzig, Germany
| | - B S Rawat
- Department of Physics, University of Liverpool, Liverpool L69 3BX, United Kingdom
- The Cockcroft Institute, Daresbury, Warrington WA4 4AD, United Kingdom
| | - V Rodin
- Department of Physics, University of Liverpool, Liverpool L69 3BX, United Kingdom
| | - O M Røhne
- Department of Physics, University of Oslo, Sem Sælandsvei 24, 0371 Oslo, Norway
| | - H Sandaker
- Department of Physics, University of Oslo, Sem Sælandsvei 24, 0371 Oslo, Norway
| | - P Smolyanskiy
- Institute of Experimental and Applied Physics, Czech Technical University in Prague, Husova 240/5, 110 00 Prague 1, Czech Republic
| | - T Sowiński
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - D Tefelski
- Warsaw University of Technology, Faculty of Physics, ul. Koszykowa 75, 00-662 Warsaw, Poland
| | - T Vafeiadis
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - C P Welsch
- Department of Physics, University of Liverpool, Liverpool L69 3BX, United Kingdom
- The Cockcroft Institute, Daresbury, Warrington WA4 4AD, United Kingdom
| | - M Zawada
- Institute of Physics, Faculty of Physics, Astronomy, and Informatics, Nicolaus Copernicus University in Torun, Grudziadzka 5, 87-100 Torun, Poland
| | - J Zielinski
- Warsaw University of Technology, Faculty of Physics, ul. Koszykowa 75, 00-662 Warsaw, Poland
| | - N Zurlo
- INFN Pavia, via Bassi 6, 27100 Pavia, Italy
- Department of Civil, Environmental, Architectural Engineering and Mathematics, University of Brescia, via Branze 43, 25123 Brescia, Italy
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Abdul Halim A, Abreu P, Aglietta M, Allekotte I, Cheminant KA, Almela A, Aloisio R, Alvarez-Muñiz J, Yebra JA, Anastasi GA, Anchordoqui L, Andrada B, Andringa S, Anukriti, Apollonio L, Aramo C, Ferreira PRA, Arnone E, Velázquez JCA, Assis P, Avila G, Avocone E, Bakalova A, Barbato F, Mocellin AB, Bellido JA, Berat C, Bertaina ME, Bhatta G, Bianciotto M, Biermann PL, Binet V, Bismark K, Bister T, Biteau J, Blazek J, Bleve C, Blümer J, Boháčová M, Boncioli D, Bonifazi C, Arbeletche LB, Borodai N, Brack J, Orchera PGB, Briechle FL, Bueno A, Buitink S, Buscemi M, Büsken M, Bwembya A, Caballero-Mora KS, Cabana-Freire S, Caccianiga L, Caruso R, Castellina A, Catalani F, Cataldi G, Cazon L, Cerda M, Cermenati A, Chinellato JA, Chudoba J, Chytka L, Clay RW, Cerutti ACC, Colalillo R, Coleman A, Coluccia MR, Conceição R, Condorelli A, Consolati G, Conte M, Convenga F, Dos Santos DC, Costa PJ, Covault CE, Cristinziani M, Sanchez CSC, Dasso S, Daumiller K, Dawson BR, de Almeida RM, de Jesús J, de Jong SJ, Neto JRTDM, De Mitri I, de Oliveira J, Franco DDO, de Palma F, de Souza V, de Errico BPDS, De Vito E, Del Popolo A, Deligny O, Denner N, Deval L, di Matteo A, Dobre M, Dobrigkeit C, D'Olivo JC, Mendes LMD, Dorosti Q, Dos Anjos JC, Dos Anjos RC, Ebr J, Ellwanger F, Emam M, Engel R, Epicoco I, Erdmann M, Etchegoyen A, Evoli C, Falcke H, Farmer J, Farrar G, Fauth AC, Fazzini N, Feldbusch F, Fenu F, Fernandes A, Fick B, Figueira JM, Filipčič A, Fitoussi T, Flaggs B, Fodran T, Fujii T, Fuster A, Galea C, Galelli C, García B, Gaudu C, Gemmeke H, Gesualdi F, Gherghel-Lascu A, Ghia PL, Giaccari U, Glombitza J, Gobbi F, Gollan F, Golup G, Berisso MG, Vitale PFG, Gongora JP, González JM, González N, Goos I, Góra D, Gorgi A, Gottowik M, Grubb TD, Guarino F, Guedes GP, Guido E, Gülzow L, Hahn S, Hamal P, Hampel MR, Hansen P, Harari D, Harvey VM, Haungs A, Hebbeker T, Hojvat C, Hörandel JR, Horvath P, Hrabovský M, Huege T, Insolia A, Isar PG, Janecek P, Jilek V, Johnsen JA, Jurysek J, Kampert KH, Keilhauer B, Khakurdikar A, Covilakam VVK, Klages HO, Kleifges M, Knapp F, Köhler J, Kunka N, Lago BL, Langner N, de Oliveira MAL, Lema-Capeans Y, Letessier-Selvon A, Lhenry-Yvon I, Lopes L, Lu L, Luce Q, Lundquist JP, Payeras AM, Majercakova M, Mandat D, Manning BC, Mantsch P, Marafico S, Mariani FM, Mariazzi AG, Mariş IC, Marsella G, Martello D, Martinelli S, Bravo OM, Martins MA, Mathes HJ, Matthews J, Matthiae G, Mayotte E, Mayotte S, Mazur PO, Medina-Tanco G, Meinert J, Melo D, Menshikov A, Merx C, Michal S, Micheletti MI, Miramonti L, Mollerach S, Montanet F, Morejon L, Morello C, Mulrey K, Mussa R, Namasaka WM, Negi S, Nellen L, Nguyen K, Nicora G, Niechciol M, Nitz D, Nosek D, Novotny V, Nožka L, Nucita A, Núñez LA, Oliveira C, Palatka M, Pallotta J, Panja S, Parente G, Paulsen T, Pawlowsky J, Pech M, Pękala J, Pelayo R, Pereira LAS, Martins EEP, Armand JP, Bertolli CP, Perrone L, Petrera S, Petrucci C, Pierog T, Pimenta M, Platino M, Pont B, Pothast M, Shahvar MP, Privitera P, Prouza M, Puyleart A, Querchfeld S, Rautenberg J, Ravignani D, Akim JVR, Reininghaus M, Ridky J, Riehn F, Risse M, Rizi V, de Carvalho WR, Rodriguez E, Rojo JR, Roncoroni MJ, Rossoni S, Roth M, Roulet E, Rovero AC, Ruehl P, Saftoiu A, Saharan M, Salamida F, Salazar H, Salina G, Gomez JDS, Sánchez F, Santos EM, Santos E, Sarazin F, Sarmento R, Sato R, Savina P, Schäfer CM, Scherini V, Schieler H, Schimassek M, Schimp M, Schmidt D, Scholten O, Schoorlemmer H, Schovánek P, Schröder FG, Schulte J, Schulz T, Sciutto SJ, Scornavacche M, Segreto A, Sehgal S, Shivashankara SU, Sigl G, Silli G, Sima O, Simkova K, Simon F, Smau R, Šmída R, Sommers P, Soriano JF, Squartini R, Stadelmaier M, Stanič S, Stasielak J, Stassi P, Strähnz S, Straub M, Suomijärvi T, Supanitsky AD, Svozilikova Z, Szadkowski Z, Tairli F, Tapia A, Taricco C, Timmermans C, Tkachenko O, Tobiska P, Peixoto CJT, Tomé B, Torrès Z, Travaini A, Travnicek P, Trimarelli C, Tueros M, Unger M, Vaclavek L, Vacula M, Galicia JFV, Valore L, Varela E, Vásquez-Ramírez A, Veberič D, Ventura C, Quispe IDV, Verzi V, Vicha J, Vink J, Vorobiov S, Watanabe C, Watson AA, Weindl A, Wiencke L, Wilczyński H, Wittkowski D, Wundheiler B, Yue B, Yushkov A, Zapparrata O, Zas E, Zavrtanik D, Zavrtanik M. Demonstrating Agreement between Radio and Fluorescence Measurements of the Depth of Maximum of Extensive Air Showers at the Pierre Auger Observatory. Phys Rev Lett 2024; 132:021001. [PMID: 38277596 DOI: 10.1103/physrevlett.132.021001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 10/16/2023] [Accepted: 10/24/2023] [Indexed: 01/28/2024]
Abstract
We show, for the first time, radio measurements of the depth of shower maximum (X_{max}) of air showers induced by cosmic rays that are compared to measurements of the established fluorescence method at the same location. Using measurements at the Pierre Auger Observatory we show full compatibility between our radio and the previously published fluorescence dataset, and between a subset of air showers observed simultaneously with both radio and fluorescence techniques, a measurement setup unique to the Pierre Auger Observatory. Furthermore, we show radio X_{max} resolution as a function of energy and demonstrate the ability to make competitive high-resolution X_{max} measurements with even a sparse radio array. With this, we show that the radio technique is capable of cosmic-ray mass composition studies, both at Auger and at other experiments.
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Affiliation(s)
- A Abdul Halim
- University of Adelaide, Adelaide, South Australia, Australia
| | - P Abreu
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - M Aglietta
- INFN, Sezione di Torino, Torino, Italy
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
| | - I Allekotte
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | | | - A Almela
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
| | - R Aloisio
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - J Alvarez-Muñiz
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - J Ammerman Yebra
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - G A Anastasi
- INFN, Sezione di Torino, Torino, Italy
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
| | - L Anchordoqui
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA
| | - B Andrada
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - S Andringa
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - Anukriti
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - L Apollonio
- INFN, Sezione di Milano, Milano, Italy
- Università di Milano, Dipartimento di Fisica, Milano, Italy
| | - C Aramo
- INFN, Sezione di Napoli, Napoli, Italy
| | | | - E Arnone
- INFN, Sezione di Torino, Torino, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
| | | | - P Assis
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - G Avila
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - E Avocone
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
| | - A Bakalova
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - F Barbato
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | | | - J A Bellido
- University of Adelaide, Adelaide, South Australia, Australia
- Universidad Nacional de San Agustin de Arequipa, Facultad de Ciencias Naturales y Formales, Arequipa, Peru
| | - C Berat
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
| | - M E Bertaina
- INFN, Sezione di Torino, Torino, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
| | - G Bhatta
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - M Bianciotto
- INFN, Sezione di Torino, Torino, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
| | - P L Biermann
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
- Departamento de Física and Departamento de Ciencias de la Atmósfera y los Océanos, FCEyN, Universidad de Buenos Aires and CONICET, Buenos Aires, Argentina
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- International Center of Advanced Studies and Instituto de Ciencias Físicas, ECyT-UNSAM and CONICET, Campus Miguelete-San Martín, Buenos Aires, Argentina
- Laboratorio Atmósfera-Departamento de Investigaciones en Láseres y sus Aplicaciones-UNIDEF (CITEDEF-CONICET), Argentina
- Observatorio Pierre Auger, Malargüe, Argentina
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
- University of Adelaide, Adelaide, South Australia, Australia
- Université Libre de Bruxelles (ULB), Brussels, Belgium
- Vrije Universiteit Brussels, Brussels, Belgium
- Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Petropolis, Brazil
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Brazil
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física, São Paulo, São Paulo, Brazil
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
- Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
- Universidade Federal de Campina Grande, Centro de Ciencias e Tecnologia, Campina Grande, Brazil
- Universidade Federal do ABC, Santo André, São Paulo, Brazil
- Universidade Federal do Paraná, Setor Palotina, Palotina, Brazil
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal Fluminense, EEIMVR, Volta Redonda, Rio de Janeiro, Brazil
- Universidad de Medellín, Medellín, Colombia
- Universidad Industrial de Santander, Bucaramanga, Colombia
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
- Palacky University, Olomouc, Czech Republic
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
- Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Sorbonne Université, Université de Paris, CNRS-IN2P3, Paris, France
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- INFN, Sezione di Catania, Catania, Italy
- INFN, Sezione di Lecce, Lecce, Italy
- INFN, Sezione di Milano, Milano, Italy
- INFN, Sezione di Napoli, Napoli, Italy
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
- INFN, Sezione di Torino, Torino, Italy
- Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- Politecnico di Milano, Dipartimento di Scienze e Tecnologie Aerospaziali, Milano, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
- Università di Milano, Dipartimento di Fisica, Milano, Italy
- Università di Napoli "Federico II," Dipartimento di Fisica "Ettore Pancini," Napoli, Italy
- Università di Palermo, Dipartimento di Fisica e Chimica "E. Segrè," Palermo, Italy
- Università di Roma "Tor Vergata," Dipartimento di Fisica, Roma, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
- Benemérita Universidad Autónoma de Puebla, Puebla, México
- Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional (UPIITA-IPN), México, Distrito Federal, México
- Universidad Autónoma de Chiapas, Tuxtla Gutiérrez, Chiapas, México
- Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
- Universidad Nacional de San Agustin de Arequipa, Facultad de Ciencias Naturales y Formales, Arequipa, Peru
- Institute of Nuclear Physics PAN, Krakow, Poland
- University of Łódź, Faculty of High-Energy Astrophysics,Łódź, Poland
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
- Institute of Space Science, Bucharest-Magurele, Romania
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Universidad de Granada and C.A.F.P.E., Granada, Spain
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
- Stichting Astronomisch Onderzoek in Nederland (ASTRON), Dwingeloo, The Netherlands
- Universiteit van Amsterdam, Faculty of Science, Amsterdam, The Netherlands
- Case Western Reserve University, Cleveland, Ohio, USA
- Colorado School of Mines, Golden, Colorado, USA
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA
- Michigan Technological University, Houghton, Michigan, USA
- New York University, New York, New York, USA
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
- University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, Delaware, USA
- University of Wisconsin-Madison, Department of Physics and WIPAC, Madison, Wisconsin, USA
| | - V Binet
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
| | - K Bismark
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | - T Bister
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - J Biteau
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
| | - J Blazek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - C Bleve
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
| | - J Blümer
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - M Boháčová
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - D Boncioli
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
| | - C Bonifazi
- International Center of Advanced Studies and Instituto de Ciencias Físicas, ECyT-UNSAM and CONICET, Campus Miguelete-San Martín, Buenos Aires, Argentina
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - N Borodai
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - J Brack
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
- Departamento de Física and Departamento de Ciencias de la Atmósfera y los Océanos, FCEyN, Universidad de Buenos Aires and CONICET, Buenos Aires, Argentina
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- International Center of Advanced Studies and Instituto de Ciencias Físicas, ECyT-UNSAM and CONICET, Campus Miguelete-San Martín, Buenos Aires, Argentina
- Laboratorio Atmósfera-Departamento de Investigaciones en Láseres y sus Aplicaciones-UNIDEF (CITEDEF-CONICET), Argentina
- Observatorio Pierre Auger, Malargüe, Argentina
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
- University of Adelaide, Adelaide, South Australia, Australia
- Université Libre de Bruxelles (ULB), Brussels, Belgium
- Vrije Universiteit Brussels, Brussels, Belgium
- Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Petropolis, Brazil
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Brazil
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física, São Paulo, São Paulo, Brazil
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
- Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
- Universidade Federal de Campina Grande, Centro de Ciencias e Tecnologia, Campina Grande, Brazil
- Universidade Federal do ABC, Santo André, São Paulo, Brazil
- Universidade Federal do Paraná, Setor Palotina, Palotina, Brazil
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal Fluminense, EEIMVR, Volta Redonda, Rio de Janeiro, Brazil
- Universidad de Medellín, Medellín, Colombia
- Universidad Industrial de Santander, Bucaramanga, Colombia
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
- Palacky University, Olomouc, Czech Republic
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
- Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Sorbonne Université, Université de Paris, CNRS-IN2P3, Paris, France
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- INFN, Sezione di Catania, Catania, Italy
- INFN, Sezione di Lecce, Lecce, Italy
- INFN, Sezione di Milano, Milano, Italy
- INFN, Sezione di Napoli, Napoli, Italy
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
- INFN, Sezione di Torino, Torino, Italy
- Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- Politecnico di Milano, Dipartimento di Scienze e Tecnologie Aerospaziali, Milano, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
- Università di Milano, Dipartimento di Fisica, Milano, Italy
- Università di Napoli "Federico II," Dipartimento di Fisica "Ettore Pancini," Napoli, Italy
- Università di Palermo, Dipartimento di Fisica e Chimica "E. Segrè," Palermo, Italy
- Università di Roma "Tor Vergata," Dipartimento di Fisica, Roma, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
- Benemérita Universidad Autónoma de Puebla, Puebla, México
- Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional (UPIITA-IPN), México, Distrito Federal, México
- Universidad Autónoma de Chiapas, Tuxtla Gutiérrez, Chiapas, México
- Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
- Universidad Nacional de San Agustin de Arequipa, Facultad de Ciencias Naturales y Formales, Arequipa, Peru
- Institute of Nuclear Physics PAN, Krakow, Poland
- University of Łódź, Faculty of High-Energy Astrophysics,Łódź, Poland
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
- Institute of Space Science, Bucharest-Magurele, Romania
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Universidad de Granada and C.A.F.P.E., Granada, Spain
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
- Stichting Astronomisch Onderzoek in Nederland (ASTRON), Dwingeloo, The Netherlands
- Universiteit van Amsterdam, Faculty of Science, Amsterdam, The Netherlands
- Case Western Reserve University, Cleveland, Ohio, USA
- Colorado School of Mines, Golden, Colorado, USA
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA
- Michigan Technological University, Houghton, Michigan, USA
- New York University, New York, New York, USA
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
- University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, Delaware, USA
- University of Wisconsin-Madison, Department of Physics and WIPAC, Madison, Wisconsin, USA
| | - P G Brichetto Orchera
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - F L Briechle
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - A Bueno
- Universidad de Granada and C.A.F.P.E., Granada, Spain
| | - S Buitink
- Vrije Universiteit Brussels, Brussels, Belgium
| | - M Buscemi
- INFN, Sezione di Catania, Catania, Italy
- Università di Palermo, Dipartimento di Fisica e Chimica "E. Segrè," Palermo, Italy
| | - M Büsken
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | - A Bwembya
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | | | - S Cabana-Freire
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - L Caccianiga
- INFN, Sezione di Milano, Milano, Italy
- Università di Milano, Dipartimento di Fisica, Milano, Italy
| | - R Caruso
- INFN, Sezione di Catania, Catania, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
| | - A Castellina
- INFN, Sezione di Torino, Torino, Italy
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
| | - F Catalani
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, São Paulo, Brazil
| | - G Cataldi
- INFN, Sezione di Lecce, Lecce, Italy
| | - L Cazon
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - M Cerda
- Observatorio Pierre Auger, Malargüe, Argentina
| | - A Cermenati
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - J A Chinellato
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
| | - J Chudoba
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - L Chytka
- Palacky University, Olomouc, Czech Republic
| | - R W Clay
- University of Adelaide, Adelaide, South Australia, Australia
| | - A C Cobos Cerutti
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
| | - R Colalillo
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Napoli "Federico II," Dipartimento di Fisica "Ettore Pancini," Napoli, Italy
| | - A Coleman
- University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, Delaware, USA
| | | | - R Conceição
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - A Condorelli
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
| | - G Consolati
- INFN, Sezione di Milano, Milano, Italy
- Politecnico di Milano, Dipartimento di Scienze e Tecnologie Aerospaziali, Milano, Italy
| | - M Conte
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
| | - F Convenga
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
| | | | - P J Costa
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - C E Covault
- Case Western Reserve University, Cleveland, Ohio, USA
| | - M Cristinziani
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - C S Cruz Sanchez
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - S Dasso
- Departamento de Física and Departamento de Ciencias de la Atmósfera y los Océanos, FCEyN, Universidad de Buenos Aires and CONICET, Buenos Aires, Argentina
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
| | - K Daumiller
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - B R Dawson
- University of Adelaide, Adelaide, South Australia, Australia
| | - R M de Almeida
- Universidade Federal Fluminense, EEIMVR, Volta Redonda, Rio de Janeiro, Brazil
| | - J de Jesús
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - S J de Jong
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - J R T de Mello Neto
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, Rio de Janeiro, Brazil
| | - I De Mitri
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - J de Oliveira
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Brazil
| | | | - F de Palma
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
| | - V de Souza
- Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, São Paulo, Brazil
| | - B P de Souza de Errico
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, Rio de Janeiro, Brazil
| | - E De Vito
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
| | - A Del Popolo
- INFN, Sezione di Catania, Catania, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
| | - O Deligny
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
| | - N Denner
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - L Deval
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | | | - M Dobre
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - C Dobrigkeit
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
| | - J C D'Olivo
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
| | - L M Domingues Mendes
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - Q Dorosti
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - J C Dos Anjos
- Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Rio de Janeiro, Brazil
| | - R C Dos Anjos
- Universidade Federal do Paraná, Setor Palotina, Palotina, Brazil
| | - J Ebr
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - F Ellwanger
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - M Emam
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - R Engel
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - I Epicoco
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
| | - M Erdmann
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - A Etchegoyen
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
| | - C Evoli
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - H Falcke
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
- Stichting Astronomisch Onderzoek in Nederland (ASTRON), Dwingeloo, The Netherlands
| | - J Farmer
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
| | - G Farrar
- New York University, New York, New York, USA
| | - A C Fauth
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
| | - N Fazzini
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
- Departamento de Física and Departamento de Ciencias de la Atmósfera y los Océanos, FCEyN, Universidad de Buenos Aires and CONICET, Buenos Aires, Argentina
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- International Center of Advanced Studies and Instituto de Ciencias Físicas, ECyT-UNSAM and CONICET, Campus Miguelete-San Martín, Buenos Aires, Argentina
- Laboratorio Atmósfera-Departamento de Investigaciones en Láseres y sus Aplicaciones-UNIDEF (CITEDEF-CONICET), Argentina
- Observatorio Pierre Auger, Malargüe, Argentina
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
- University of Adelaide, Adelaide, South Australia, Australia
- Université Libre de Bruxelles (ULB), Brussels, Belgium
- Vrije Universiteit Brussels, Brussels, Belgium
- Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Petropolis, Brazil
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Brazil
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física, São Paulo, São Paulo, Brazil
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
- Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
- Universidade Federal de Campina Grande, Centro de Ciencias e Tecnologia, Campina Grande, Brazil
- Universidade Federal do ABC, Santo André, São Paulo, Brazil
- Universidade Federal do Paraná, Setor Palotina, Palotina, Brazil
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal Fluminense, EEIMVR, Volta Redonda, Rio de Janeiro, Brazil
- Universidad de Medellín, Medellín, Colombia
- Universidad Industrial de Santander, Bucaramanga, Colombia
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
- Palacky University, Olomouc, Czech Republic
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
- Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Sorbonne Université, Université de Paris, CNRS-IN2P3, Paris, France
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- INFN, Sezione di Catania, Catania, Italy
- INFN, Sezione di Lecce, Lecce, Italy
- INFN, Sezione di Milano, Milano, Italy
- INFN, Sezione di Napoli, Napoli, Italy
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
- INFN, Sezione di Torino, Torino, Italy
- Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- Politecnico di Milano, Dipartimento di Scienze e Tecnologie Aerospaziali, Milano, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
- Università di Milano, Dipartimento di Fisica, Milano, Italy
- Università di Napoli "Federico II," Dipartimento di Fisica "Ettore Pancini," Napoli, Italy
- Università di Palermo, Dipartimento di Fisica e Chimica "E. Segrè," Palermo, Italy
- Università di Roma "Tor Vergata," Dipartimento di Fisica, Roma, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
- Benemérita Universidad Autónoma de Puebla, Puebla, México
- Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional (UPIITA-IPN), México, Distrito Federal, México
- Universidad Autónoma de Chiapas, Tuxtla Gutiérrez, Chiapas, México
- Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
- Universidad Nacional de San Agustin de Arequipa, Facultad de Ciencias Naturales y Formales, Arequipa, Peru
- Institute of Nuclear Physics PAN, Krakow, Poland
- University of Łódź, Faculty of High-Energy Astrophysics,Łódź, Poland
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
- Institute of Space Science, Bucharest-Magurele, Romania
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Universidad de Granada and C.A.F.P.E., Granada, Spain
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
- Stichting Astronomisch Onderzoek in Nederland (ASTRON), Dwingeloo, The Netherlands
- Universiteit van Amsterdam, Faculty of Science, Amsterdam, The Netherlands
- Case Western Reserve University, Cleveland, Ohio, USA
- Colorado School of Mines, Golden, Colorado, USA
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA
- Michigan Technological University, Houghton, Michigan, USA
- New York University, New York, New York, USA
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
- University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, Delaware, USA
- University of Wisconsin-Madison, Department of Physics and WIPAC, Madison, Wisconsin, USA
| | - F Feldbusch
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - F Fenu
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - A Fernandes
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - B Fick
- Michigan Technological University, Houghton, Michigan, USA
| | - J M Figueira
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - A Filipčič
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
| | - T Fitoussi
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - B Flaggs
- University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, Delaware, USA
| | - T Fodran
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - T Fujii
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
| | - A Fuster
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
| | - C Galea
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - C Galelli
- INFN, Sezione di Milano, Milano, Italy
- Università di Milano, Dipartimento di Fisica, Milano, Italy
| | - B García
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
| | - C Gaudu
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - H Gemmeke
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - F Gesualdi
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - A Gherghel-Lascu
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - P L Ghia
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
| | | | - J Glombitza
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - F Gobbi
- Observatorio Pierre Auger, Malargüe, Argentina
| | - F Gollan
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - G Golup
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - M Gómez Berisso
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - P F Gómez Vitale
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - J P Gongora
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - J M González
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - N González
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - I Goos
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - D Góra
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - A Gorgi
- INFN, Sezione di Torino, Torino, Italy
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
| | - M Gottowik
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - T D Grubb
- University of Adelaide, Adelaide, South Australia, Australia
| | - F Guarino
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Napoli "Federico II," Dipartimento di Fisica "Ettore Pancini," Napoli, Italy
| | - G P Guedes
- Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
| | - E Guido
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - L Gülzow
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - S Hahn
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | - P Hamal
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - M R Hampel
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - P Hansen
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - D Harari
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - V M Harvey
- University of Adelaide, Adelaide, South Australia, Australia
| | - A Haungs
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - T Hebbeker
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - C Hojvat
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
- Departamento de Física and Departamento de Ciencias de la Atmósfera y los Océanos, FCEyN, Universidad de Buenos Aires and CONICET, Buenos Aires, Argentina
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- International Center of Advanced Studies and Instituto de Ciencias Físicas, ECyT-UNSAM and CONICET, Campus Miguelete-San Martín, Buenos Aires, Argentina
- Laboratorio Atmósfera-Departamento de Investigaciones en Láseres y sus Aplicaciones-UNIDEF (CITEDEF-CONICET), Argentina
- Observatorio Pierre Auger, Malargüe, Argentina
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
- University of Adelaide, Adelaide, South Australia, Australia
- Université Libre de Bruxelles (ULB), Brussels, Belgium
- Vrije Universiteit Brussels, Brussels, Belgium
- Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Petropolis, Brazil
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Brazil
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física, São Paulo, São Paulo, Brazil
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
- Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
- Universidade Federal de Campina Grande, Centro de Ciencias e Tecnologia, Campina Grande, Brazil
- Universidade Federal do ABC, Santo André, São Paulo, Brazil
- Universidade Federal do Paraná, Setor Palotina, Palotina, Brazil
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal Fluminense, EEIMVR, Volta Redonda, Rio de Janeiro, Brazil
- Universidad de Medellín, Medellín, Colombia
- Universidad Industrial de Santander, Bucaramanga, Colombia
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
- Palacky University, Olomouc, Czech Republic
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
- Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Sorbonne Université, Université de Paris, CNRS-IN2P3, Paris, France
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- INFN, Sezione di Catania, Catania, Italy
- INFN, Sezione di Lecce, Lecce, Italy
- INFN, Sezione di Milano, Milano, Italy
- INFN, Sezione di Napoli, Napoli, Italy
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
- INFN, Sezione di Torino, Torino, Italy
- Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- Politecnico di Milano, Dipartimento di Scienze e Tecnologie Aerospaziali, Milano, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
- Università di Milano, Dipartimento di Fisica, Milano, Italy
- Università di Napoli "Federico II," Dipartimento di Fisica "Ettore Pancini," Napoli, Italy
- Università di Palermo, Dipartimento di Fisica e Chimica "E. Segrè," Palermo, Italy
- Università di Roma "Tor Vergata," Dipartimento di Fisica, Roma, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
- Benemérita Universidad Autónoma de Puebla, Puebla, México
- Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional (UPIITA-IPN), México, Distrito Federal, México
- Universidad Autónoma de Chiapas, Tuxtla Gutiérrez, Chiapas, México
- Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
- Universidad Nacional de San Agustin de Arequipa, Facultad de Ciencias Naturales y Formales, Arequipa, Peru
- Institute of Nuclear Physics PAN, Krakow, Poland
- University of Łódź, Faculty of High-Energy Astrophysics,Łódź, Poland
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
- Institute of Space Science, Bucharest-Magurele, Romania
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Universidad de Granada and C.A.F.P.E., Granada, Spain
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
- Stichting Astronomisch Onderzoek in Nederland (ASTRON), Dwingeloo, The Netherlands
- Universiteit van Amsterdam, Faculty of Science, Amsterdam, The Netherlands
- Case Western Reserve University, Cleveland, Ohio, USA
- Colorado School of Mines, Golden, Colorado, USA
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA
- Michigan Technological University, Houghton, Michigan, USA
- New York University, New York, New York, USA
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
- University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, Delaware, USA
- University of Wisconsin-Madison, Department of Physics and WIPAC, Madison, Wisconsin, USA
| | - J R Hörandel
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - P Horvath
- Palacky University, Olomouc, Czech Republic
| | | | - T Huege
- Vrije Universiteit Brussels, Brussels, Belgium
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - A Insolia
- INFN, Sezione di Catania, Catania, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
| | - P G Isar
- Institute of Space Science, Bucharest-Magurele, Romania
| | - P Janecek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - V Jilek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - J A Johnsen
- Colorado School of Mines, Golden, Colorado, USA
| | - J Jurysek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - K-H Kampert
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - B Keilhauer
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - A Khakurdikar
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - V V Kizakke Covilakam
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - H O Klages
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - M Kleifges
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - F Knapp
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | - J Köhler
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - N Kunka
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - B L Lago
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Petropolis, Brazil
| | - N Langner
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | | | - Y Lema-Capeans
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - A Letessier-Selvon
- Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Sorbonne Université, Université de Paris, CNRS-IN2P3, Paris, France
| | - I Lhenry-Yvon
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
| | - L Lopes
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - L Lu
- University of Wisconsin-Madison, Department of Physics and WIPAC, Madison, Wisconsin, USA
| | - Q Luce
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | - J P Lundquist
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - A Machado Payeras
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
| | - M Majercakova
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - D Mandat
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - B C Manning
- University of Adelaide, Adelaide, South Australia, Australia
| | - P Mantsch
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
- Departamento de Física and Departamento de Ciencias de la Atmósfera y los Océanos, FCEyN, Universidad de Buenos Aires and CONICET, Buenos Aires, Argentina
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- International Center of Advanced Studies and Instituto de Ciencias Físicas, ECyT-UNSAM and CONICET, Campus Miguelete-San Martín, Buenos Aires, Argentina
- Laboratorio Atmósfera-Departamento de Investigaciones en Láseres y sus Aplicaciones-UNIDEF (CITEDEF-CONICET), Argentina
- Observatorio Pierre Auger, Malargüe, Argentina
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
- University of Adelaide, Adelaide, South Australia, Australia
- Université Libre de Bruxelles (ULB), Brussels, Belgium
- Vrije Universiteit Brussels, Brussels, Belgium
- Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Petropolis, Brazil
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Brazil
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física, São Paulo, São Paulo, Brazil
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
- Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
- Universidade Federal de Campina Grande, Centro de Ciencias e Tecnologia, Campina Grande, Brazil
- Universidade Federal do ABC, Santo André, São Paulo, Brazil
- Universidade Federal do Paraná, Setor Palotina, Palotina, Brazil
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal Fluminense, EEIMVR, Volta Redonda, Rio de Janeiro, Brazil
- Universidad de Medellín, Medellín, Colombia
- Universidad Industrial de Santander, Bucaramanga, Colombia
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
- Palacky University, Olomouc, Czech Republic
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
- Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Sorbonne Université, Université de Paris, CNRS-IN2P3, Paris, France
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- INFN, Sezione di Catania, Catania, Italy
- INFN, Sezione di Lecce, Lecce, Italy
- INFN, Sezione di Milano, Milano, Italy
- INFN, Sezione di Napoli, Napoli, Italy
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
- INFN, Sezione di Torino, Torino, Italy
- Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- Politecnico di Milano, Dipartimento di Scienze e Tecnologie Aerospaziali, Milano, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
- Università di Milano, Dipartimento di Fisica, Milano, Italy
- Università di Napoli "Federico II," Dipartimento di Fisica "Ettore Pancini," Napoli, Italy
- Università di Palermo, Dipartimento di Fisica e Chimica "E. Segrè," Palermo, Italy
- Università di Roma "Tor Vergata," Dipartimento di Fisica, Roma, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
- Benemérita Universidad Autónoma de Puebla, Puebla, México
- Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional (UPIITA-IPN), México, Distrito Federal, México
- Universidad Autónoma de Chiapas, Tuxtla Gutiérrez, Chiapas, México
- Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
- Universidad Nacional de San Agustin de Arequipa, Facultad de Ciencias Naturales y Formales, Arequipa, Peru
- Institute of Nuclear Physics PAN, Krakow, Poland
- University of Łódź, Faculty of High-Energy Astrophysics,Łódź, Poland
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
- Institute of Space Science, Bucharest-Magurele, Romania
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Universidad de Granada and C.A.F.P.E., Granada, Spain
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
- Stichting Astronomisch Onderzoek in Nederland (ASTRON), Dwingeloo, The Netherlands
- Universiteit van Amsterdam, Faculty of Science, Amsterdam, The Netherlands
- Case Western Reserve University, Cleveland, Ohio, USA
- Colorado School of Mines, Golden, Colorado, USA
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA
- Michigan Technological University, Houghton, Michigan, USA
- New York University, New York, New York, USA
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
- University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, Delaware, USA
- University of Wisconsin-Madison, Department of Physics and WIPAC, Madison, Wisconsin, USA
| | - S Marafico
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
| | - F M Mariani
- INFN, Sezione di Milano, Milano, Italy
- Università di Milano, Dipartimento di Fisica, Milano, Italy
| | - A G Mariazzi
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - I C Mariş
- Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - G Marsella
- INFN, Sezione di Catania, Catania, Italy
- Università di Palermo, Dipartimento di Fisica e Chimica "E. Segrè," Palermo, Italy
| | - D Martello
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
| | - S Martinelli
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | | | - M A Martins
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - H-J Mathes
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - J Matthews
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
- Departamento de Física and Departamento de Ciencias de la Atmósfera y los Océanos, FCEyN, Universidad de Buenos Aires and CONICET, Buenos Aires, Argentina
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- International Center of Advanced Studies and Instituto de Ciencias Físicas, ECyT-UNSAM and CONICET, Campus Miguelete-San Martín, Buenos Aires, Argentina
- Laboratorio Atmósfera-Departamento de Investigaciones en Láseres y sus Aplicaciones-UNIDEF (CITEDEF-CONICET), Argentina
- Observatorio Pierre Auger, Malargüe, Argentina
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
- University of Adelaide, Adelaide, South Australia, Australia
- Université Libre de Bruxelles (ULB), Brussels, Belgium
- Vrije Universiteit Brussels, Brussels, Belgium
- Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Petropolis, Brazil
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Brazil
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física, São Paulo, São Paulo, Brazil
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
- Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
- Universidade Federal de Campina Grande, Centro de Ciencias e Tecnologia, Campina Grande, Brazil
- Universidade Federal do ABC, Santo André, São Paulo, Brazil
- Universidade Federal do Paraná, Setor Palotina, Palotina, Brazil
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal Fluminense, EEIMVR, Volta Redonda, Rio de Janeiro, Brazil
- Universidad de Medellín, Medellín, Colombia
- Universidad Industrial de Santander, Bucaramanga, Colombia
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
- Palacky University, Olomouc, Czech Republic
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
- Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Sorbonne Université, Université de Paris, CNRS-IN2P3, Paris, France
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- INFN, Sezione di Catania, Catania, Italy
- INFN, Sezione di Lecce, Lecce, Italy
- INFN, Sezione di Milano, Milano, Italy
- INFN, Sezione di Napoli, Napoli, Italy
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
- INFN, Sezione di Torino, Torino, Italy
- Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- Politecnico di Milano, Dipartimento di Scienze e Tecnologie Aerospaziali, Milano, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
- Università di Milano, Dipartimento di Fisica, Milano, Italy
- Università di Napoli "Federico II," Dipartimento di Fisica "Ettore Pancini," Napoli, Italy
- Università di Palermo, Dipartimento di Fisica e Chimica "E. Segrè," Palermo, Italy
- Università di Roma "Tor Vergata," Dipartimento di Fisica, Roma, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
- Benemérita Universidad Autónoma de Puebla, Puebla, México
- Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional (UPIITA-IPN), México, Distrito Federal, México
- Universidad Autónoma de Chiapas, Tuxtla Gutiérrez, Chiapas, México
- Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
- Universidad Nacional de San Agustin de Arequipa, Facultad de Ciencias Naturales y Formales, Arequipa, Peru
- Institute of Nuclear Physics PAN, Krakow, Poland
- University of Łódź, Faculty of High-Energy Astrophysics,Łódź, Poland
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
- Institute of Space Science, Bucharest-Magurele, Romania
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Universidad de Granada and C.A.F.P.E., Granada, Spain
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
- Stichting Astronomisch Onderzoek in Nederland (ASTRON), Dwingeloo, The Netherlands
- Universiteit van Amsterdam, Faculty of Science, Amsterdam, The Netherlands
- Case Western Reserve University, Cleveland, Ohio, USA
- Colorado School of Mines, Golden, Colorado, USA
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA
- Michigan Technological University, Houghton, Michigan, USA
- New York University, New York, New York, USA
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
- University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, Delaware, USA
- University of Wisconsin-Madison, Department of Physics and WIPAC, Madison, Wisconsin, USA
| | - G Matthiae
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
- Università di Roma "Tor Vergata," Dipartimento di Fisica, Roma, Italy
| | - E Mayotte
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
- Colorado School of Mines, Golden, Colorado, USA
| | - S Mayotte
- Colorado School of Mines, Golden, Colorado, USA
| | - P O Mazur
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
- Departamento de Física and Departamento de Ciencias de la Atmósfera y los Océanos, FCEyN, Universidad de Buenos Aires and CONICET, Buenos Aires, Argentina
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- International Center of Advanced Studies and Instituto de Ciencias Físicas, ECyT-UNSAM and CONICET, Campus Miguelete-San Martín, Buenos Aires, Argentina
- Laboratorio Atmósfera-Departamento de Investigaciones en Láseres y sus Aplicaciones-UNIDEF (CITEDEF-CONICET), Argentina
- Observatorio Pierre Auger, Malargüe, Argentina
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
- University of Adelaide, Adelaide, South Australia, Australia
- Université Libre de Bruxelles (ULB), Brussels, Belgium
- Vrije Universiteit Brussels, Brussels, Belgium
- Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Petropolis, Brazil
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Brazil
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física, São Paulo, São Paulo, Brazil
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
- Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
- Universidade Federal de Campina Grande, Centro de Ciencias e Tecnologia, Campina Grande, Brazil
- Universidade Federal do ABC, Santo André, São Paulo, Brazil
- Universidade Federal do Paraná, Setor Palotina, Palotina, Brazil
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal Fluminense, EEIMVR, Volta Redonda, Rio de Janeiro, Brazil
- Universidad de Medellín, Medellín, Colombia
- Universidad Industrial de Santander, Bucaramanga, Colombia
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
- Palacky University, Olomouc, Czech Republic
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
- Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Sorbonne Université, Université de Paris, CNRS-IN2P3, Paris, France
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- INFN, Sezione di Catania, Catania, Italy
- INFN, Sezione di Lecce, Lecce, Italy
- INFN, Sezione di Milano, Milano, Italy
- INFN, Sezione di Napoli, Napoli, Italy
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
- INFN, Sezione di Torino, Torino, Italy
- Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- Politecnico di Milano, Dipartimento di Scienze e Tecnologie Aerospaziali, Milano, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
- Università di Milano, Dipartimento di Fisica, Milano, Italy
- Università di Napoli "Federico II," Dipartimento di Fisica "Ettore Pancini," Napoli, Italy
- Università di Palermo, Dipartimento di Fisica e Chimica "E. Segrè," Palermo, Italy
- Università di Roma "Tor Vergata," Dipartimento di Fisica, Roma, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
- Benemérita Universidad Autónoma de Puebla, Puebla, México
- Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional (UPIITA-IPN), México, Distrito Federal, México
- Universidad Autónoma de Chiapas, Tuxtla Gutiérrez, Chiapas, México
- Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
- Universidad Nacional de San Agustin de Arequipa, Facultad de Ciencias Naturales y Formales, Arequipa, Peru
- Institute of Nuclear Physics PAN, Krakow, Poland
- University of Łódź, Faculty of High-Energy Astrophysics,Łódź, Poland
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
- Institute of Space Science, Bucharest-Magurele, Romania
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Universidad de Granada and C.A.F.P.E., Granada, Spain
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
- Stichting Astronomisch Onderzoek in Nederland (ASTRON), Dwingeloo, The Netherlands
- Universiteit van Amsterdam, Faculty of Science, Amsterdam, The Netherlands
- Case Western Reserve University, Cleveland, Ohio, USA
- Colorado School of Mines, Golden, Colorado, USA
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA
- Michigan Technological University, Houghton, Michigan, USA
- New York University, New York, New York, USA
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
- University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, Delaware, USA
- University of Wisconsin-Madison, Department of Physics and WIPAC, Madison, Wisconsin, USA
| | - G Medina-Tanco
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
| | - J Meinert
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - D Melo
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - A Menshikov
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - C Merx
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - S Michal
- Palacky University, Olomouc, Czech Republic
| | - M I Micheletti
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
| | - L Miramonti
- INFN, Sezione di Milano, Milano, Italy
- Università di Milano, Dipartimento di Fisica, Milano, Italy
| | - S Mollerach
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - F Montanet
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
| | - L Morejon
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - C Morello
- INFN, Sezione di Torino, Torino, Italy
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
| | - K Mulrey
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - R Mussa
- INFN, Sezione di Torino, Torino, Italy
| | - W M Namasaka
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - S Negi
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - L Nellen
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
| | - K Nguyen
- Michigan Technological University, Houghton, Michigan, USA
| | - G Nicora
- Laboratorio Atmósfera-Departamento de Investigaciones en Láseres y sus Aplicaciones-UNIDEF (CITEDEF-CONICET), Argentina
| | - M Niechciol
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - D Nitz
- Michigan Technological University, Houghton, Michigan, USA
| | - D Nosek
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
| | - V Novotny
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
| | - L Nožka
- Palacky University, Olomouc, Czech Republic
| | - A Nucita
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
| | - L A Núñez
- Universidad Industrial de Santander, Bucaramanga, Colombia
| | - C Oliveira
- Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, São Paulo, Brazil
| | - M Palatka
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - J Pallotta
- Laboratorio Atmósfera-Departamento de Investigaciones en Láseres y sus Aplicaciones-UNIDEF (CITEDEF-CONICET), Argentina
| | - S Panja
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - G Parente
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - T Paulsen
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - J Pawlowsky
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - M Pech
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - J Pękala
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - R Pelayo
- Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional (UPIITA-IPN), México, Distrito Federal, México
| | - L A S Pereira
- Universidade Federal de Campina Grande, Centro de Ciencias e Tecnologia, Campina Grande, Brazil
| | - E E Pereira Martins
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | - J Perez Armand
- Universidade de São Paulo, Instituto de Física, São Paulo, São Paulo, Brazil
| | - C Pérez Bertolli
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - L Perrone
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
| | - S Petrera
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - C Petrucci
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
| | - T Pierog
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - M Pimenta
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - M Platino
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - B Pont
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - M Pothast
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - M Pourmohammad Shahvar
- INFN, Sezione di Catania, Catania, Italy
- Università di Palermo, Dipartimento di Fisica e Chimica "E. Segrè," Palermo, Italy
| | - P Privitera
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
| | - M Prouza
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - A Puyleart
- Michigan Technological University, Houghton, Michigan, USA
| | - S Querchfeld
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - J Rautenberg
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - D Ravignani
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | | | - M Reininghaus
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | - J Ridky
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - F Riehn
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - M Risse
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - V Rizi
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
| | | | - E Rodriguez
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - J Rodriguez Rojo
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - M J Roncoroni
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - S Rossoni
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
| | - M Roth
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - E Roulet
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - A C Rovero
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
| | - P Ruehl
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - A Saftoiu
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - M Saharan
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - F Salamida
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
| | - H Salazar
- Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - G Salina
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
| | | | - F Sánchez
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - E M Santos
- Universidade de São Paulo, Instituto de Física, São Paulo, São Paulo, Brazil
| | - E Santos
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - F Sarazin
- Colorado School of Mines, Golden, Colorado, USA
| | - R Sarmento
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - R Sato
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - P Savina
- University of Wisconsin-Madison, Department of Physics and WIPAC, Madison, Wisconsin, USA
| | - C M Schäfer
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | - V Scherini
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
| | - H Schieler
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - M Schimassek
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
| | - M Schimp
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - D Schmidt
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - O Scholten
- Vrije Universiteit Brussels, Brussels, Belgium
| | - H Schoorlemmer
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - P Schovánek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - F G Schröder
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
- University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, Delaware, USA
| | - J Schulte
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - T Schulz
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - S J Sciutto
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - M Scornavacche
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - A Segreto
- INFN, Sezione di Catania, Catania, Italy
- Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy
| | - S Sehgal
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - S U Shivashankara
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - G Sigl
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
| | - G Silli
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - O Sima
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - K Simkova
- Vrije Universiteit Brussels, Brussels, Belgium
| | - F Simon
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - R Smau
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - R Šmída
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
| | - P Sommers
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
- Departamento de Física and Departamento de Ciencias de la Atmósfera y los Océanos, FCEyN, Universidad de Buenos Aires and CONICET, Buenos Aires, Argentina
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- International Center of Advanced Studies and Instituto de Ciencias Físicas, ECyT-UNSAM and CONICET, Campus Miguelete-San Martín, Buenos Aires, Argentina
- Laboratorio Atmósfera-Departamento de Investigaciones en Láseres y sus Aplicaciones-UNIDEF (CITEDEF-CONICET), Argentina
- Observatorio Pierre Auger, Malargüe, Argentina
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
- University of Adelaide, Adelaide, South Australia, Australia
- Université Libre de Bruxelles (ULB), Brussels, Belgium
- Vrije Universiteit Brussels, Brussels, Belgium
- Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Petropolis, Brazil
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Brazil
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física, São Paulo, São Paulo, Brazil
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
- Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
- Universidade Federal de Campina Grande, Centro de Ciencias e Tecnologia, Campina Grande, Brazil
- Universidade Federal do ABC, Santo André, São Paulo, Brazil
- Universidade Federal do Paraná, Setor Palotina, Palotina, Brazil
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal Fluminense, EEIMVR, Volta Redonda, Rio de Janeiro, Brazil
- Universidad de Medellín, Medellín, Colombia
- Universidad Industrial de Santander, Bucaramanga, Colombia
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
- Palacky University, Olomouc, Czech Republic
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
- Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Sorbonne Université, Université de Paris, CNRS-IN2P3, Paris, France
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- INFN, Sezione di Catania, Catania, Italy
- INFN, Sezione di Lecce, Lecce, Italy
- INFN, Sezione di Milano, Milano, Italy
- INFN, Sezione di Napoli, Napoli, Italy
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
- INFN, Sezione di Torino, Torino, Italy
- Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- Politecnico di Milano, Dipartimento di Scienze e Tecnologie Aerospaziali, Milano, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
- Università di Milano, Dipartimento di Fisica, Milano, Italy
- Università di Napoli "Federico II," Dipartimento di Fisica "Ettore Pancini," Napoli, Italy
- Università di Palermo, Dipartimento di Fisica e Chimica "E. Segrè," Palermo, Italy
- Università di Roma "Tor Vergata," Dipartimento di Fisica, Roma, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
- Benemérita Universidad Autónoma de Puebla, Puebla, México
- Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional (UPIITA-IPN), México, Distrito Federal, México
- Universidad Autónoma de Chiapas, Tuxtla Gutiérrez, Chiapas, México
- Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
- Universidad Nacional de San Agustin de Arequipa, Facultad de Ciencias Naturales y Formales, Arequipa, Peru
- Institute of Nuclear Physics PAN, Krakow, Poland
- University of Łódź, Faculty of High-Energy Astrophysics,Łódź, Poland
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
- Institute of Space Science, Bucharest-Magurele, Romania
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Universidad de Granada and C.A.F.P.E., Granada, Spain
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
- Stichting Astronomisch Onderzoek in Nederland (ASTRON), Dwingeloo, The Netherlands
- Universiteit van Amsterdam, Faculty of Science, Amsterdam, The Netherlands
- Case Western Reserve University, Cleveland, Ohio, USA
- Colorado School of Mines, Golden, Colorado, USA
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA
- Michigan Technological University, Houghton, Michigan, USA
- New York University, New York, New York, USA
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
- University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, Delaware, USA
- University of Wisconsin-Madison, Department of Physics and WIPAC, Madison, Wisconsin, USA
| | - J F Soriano
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA
| | - R Squartini
- Observatorio Pierre Auger, Malargüe, Argentina
| | - M Stadelmaier
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
- INFN, Sezione di Milano, Milano, Italy
- Università di Milano, Dipartimento di Fisica, Milano, Italy
| | - S Stanič
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - J Stasielak
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - P Stassi
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
| | - S Strähnz
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | - M Straub
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - T Suomijärvi
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
| | - A D Supanitsky
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - Z Svozilikova
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Z Szadkowski
- University of Łódź, Faculty of High-Energy Astrophysics,Łódź, Poland
| | - F Tairli
- University of Adelaide, Adelaide, South Australia, Australia
| | - A Tapia
- Universidad de Medellín, Medellín, Colombia
| | - C Taricco
- INFN, Sezione di Torino, Torino, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
| | - C Timmermans
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - O Tkachenko
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - P Tobiska
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - C J Todero Peixoto
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, São Paulo, Brazil
| | - B Tomé
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - Z Torrès
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
| | - A Travaini
- Observatorio Pierre Auger, Malargüe, Argentina
| | - P Travnicek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - C Trimarelli
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
| | - M Tueros
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - M Unger
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - L Vaclavek
- Palacky University, Olomouc, Czech Republic
| | - M Vacula
- Palacky University, Olomouc, Czech Republic
| | - J F Valdés Galicia
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
| | - L Valore
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Napoli "Federico II," Dipartimento di Fisica "Ettore Pancini," Napoli, Italy
| | - E Varela
- Benemérita Universidad Autónoma de Puebla, Puebla, México
| | | | - D Veberič
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - C Ventura
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - V Verzi
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
| | - J Vicha
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - J Vink
- Universiteit van Amsterdam, Faculty of Science, Amsterdam, The Netherlands
| | - S Vorobiov
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - C Watanabe
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, Rio de Janeiro, Brazil
| | - A A Watson
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
- Departamento de Física and Departamento de Ciencias de la Atmósfera y los Océanos, FCEyN, Universidad de Buenos Aires and CONICET, Buenos Aires, Argentina
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- International Center of Advanced Studies and Instituto de Ciencias Físicas, ECyT-UNSAM and CONICET, Campus Miguelete-San Martín, Buenos Aires, Argentina
- Laboratorio Atmósfera-Departamento de Investigaciones en Láseres y sus Aplicaciones-UNIDEF (CITEDEF-CONICET), Argentina
- Observatorio Pierre Auger, Malargüe, Argentina
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
- University of Adelaide, Adelaide, South Australia, Australia
- Université Libre de Bruxelles (ULB), Brussels, Belgium
- Vrije Universiteit Brussels, Brussels, Belgium
- Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Petropolis, Brazil
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Brazil
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Física, São Paulo, São Paulo, Brazil
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
- Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
- Universidade Federal de Campina Grande, Centro de Ciencias e Tecnologia, Campina Grande, Brazil
- Universidade Federal do ABC, Santo André, São Paulo, Brazil
- Universidade Federal do Paraná, Setor Palotina, Palotina, Brazil
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal Fluminense, EEIMVR, Volta Redonda, Rio de Janeiro, Brazil
- Universidad de Medellín, Medellín, Colombia
- Universidad Industrial de Santander, Bucaramanga, Colombia
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
- Palacky University, Olomouc, Czech Republic
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
- Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Sorbonne Université, Université de Paris, CNRS-IN2P3, Paris, France
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- INFN, Sezione di Catania, Catania, Italy
- INFN, Sezione di Lecce, Lecce, Italy
- INFN, Sezione di Milano, Milano, Italy
- INFN, Sezione di Napoli, Napoli, Italy
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
- INFN, Sezione di Torino, Torino, Italy
- Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- Politecnico di Milano, Dipartimento di Scienze e Tecnologie Aerospaziali, Milano, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
- Università di Milano, Dipartimento di Fisica, Milano, Italy
- Università di Napoli "Federico II," Dipartimento di Fisica "Ettore Pancini," Napoli, Italy
- Università di Palermo, Dipartimento di Fisica e Chimica "E. Segrè," Palermo, Italy
- Università di Roma "Tor Vergata," Dipartimento di Fisica, Roma, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
- Benemérita Universidad Autónoma de Puebla, Puebla, México
- Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional (UPIITA-IPN), México, Distrito Federal, México
- Universidad Autónoma de Chiapas, Tuxtla Gutiérrez, Chiapas, México
- Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
- Universidad Nacional de San Agustin de Arequipa, Facultad de Ciencias Naturales y Formales, Arequipa, Peru
- Institute of Nuclear Physics PAN, Krakow, Poland
- University of Łódź, Faculty of High-Energy Astrophysics,Łódź, Poland
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
- Institute of Space Science, Bucharest-Magurele, Romania
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Universidad de Granada and C.A.F.P.E., Granada, Spain
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
- Stichting Astronomisch Onderzoek in Nederland (ASTRON), Dwingeloo, The Netherlands
- Universiteit van Amsterdam, Faculty of Science, Amsterdam, The Netherlands
- Case Western Reserve University, Cleveland, Ohio, USA
- Colorado School of Mines, Golden, Colorado, USA
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA
- Michigan Technological University, Houghton, Michigan, USA
- New York University, New York, New York, USA
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
- University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, Delaware, USA
- University of Wisconsin-Madison, Department of Physics and WIPAC, Madison, Wisconsin, USA
| | - A Weindl
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - L Wiencke
- Colorado School of Mines, Golden, Colorado, USA
| | - H Wilczyński
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - D Wittkowski
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - B Wundheiler
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - B Yue
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - A Yushkov
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - O Zapparrata
- Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - E Zas
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - D Zavrtanik
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
| | - M Zavrtanik
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
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4
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Consolati G, Nichetti D, Quasso F. Probing the Free Volume in Polymers by Means of Positron Annihilation Lifetime Spectroscopy. Polymers (Basel) 2023; 15:3128. [PMID: 37514518 PMCID: PMC10386335 DOI: 10.3390/polym15143128] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/18/2023] [Accepted: 07/20/2023] [Indexed: 07/30/2023] Open
Abstract
Positron annihilation lifetime spectroscopy (PALS) is a valuable technique to investigate defects in solids, such as vacancy clusters and grain boundaries in metals and alloys, as well as lattice imperfections in semiconductors. Positron spectroscopy is able to reveal the size, structure and concentration of vacancies with a sensitivity of 10-7. In the field of porous and amorphous systems, PALS can probe cavities in the range from a few tenths up to several tens of nm. In the case of polymers, PALS is one of the few techniques able to give information on the holes forming the free volume. This quantity, which cannot be measured with macroscopic techniques, is correlated to important mechanical, thermal, and transport properties of polymers. It can be deduced theoretically by applying suitable equations of state derived by cell models, and PALS supplies a quantitative measure of the free volume by probing the corresponding sub-nanometric holes. The system used is positronium (Ps), an unstable atom formed by a positron and an electron, whose lifetime can be related to the typical size of the holes. When analyzed in terms of continuous lifetimes, the positron annihilation spectrum allows one to gain insight into the distribution of the free volume holes, an almost unique feature of this technique. The present paper is an overview of PALS, addressed in particular to readers not familiar with this technique, with emphasis on the experimental aspects. After a general introduction on free volume, positronium, and the experimental apparatus needed to acquire the corresponding lifetime, some of the recent results obtained by various groups will be shown, highlighting the connections between the free volume as probed by PALS and structural properties of the investigated materials.
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Affiliation(s)
- Giovanni Consolati
- Department of Aerospace Science and Technology, Politecnico di Milano, Via LaMasa, 34, 20156 Milano, Italy
- INFN, Sezione di Milano, Via Celoria, 16, 20133 Milano, Italy
| | | | - Fiorenza Quasso
- Department of Aerospace Science and Technology, Politecnico di Milano, Via LaMasa, 34, 20156 Milano, Italy
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5
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Abreu P, Aglietta M, Albury JM, Allekotte I, Almeida Cheminant K, Almela A, Aloisio R, Alvarez-Muñiz J, Alves Batista R, Ammerman Yebra J, Anastasi GA, Anchordoqui L, Andrada B, Andringa S, Aramo C, Araújo Ferreira PR, Arnone E, Arteaga Velázquez JC, Asorey H, Assis P, Avila G, Avocone E, Badescu AM, Bakalova A, Balaceanu A, Barbato F, Bellido JA, Berat C, Bertaina ME, Bhatta G, Biermann PL, Binet V, Bismark K, Bister T, Biteau J, Blazek J, Bleve C, Blümer J, Boháčová M, Boncioli D, Bonifazi C, Bonneau Arbeletche L, Borodai N, Botti AM, Brack J, Bretz T, Brichetto Orchera PG, Briechle FL, Buchholz P, Bueno A, Buitink S, Buscemi M, Büsken M, Caballero-Mora KS, Caccianiga L, Canfora F, Caracas I, Caruso R, Castellina A, Catalani F, Cataldi G, Cazon L, Cerda M, Chinellato JA, Chudoba J, Chytka L, Clay RW, Cobos Cerutti AC, Colalillo R, Coleman A, Coluccia MR, Conceição R, Condorelli A, Consolati G, Contreras F, Convenga F, Correia Dos Santos D, Covault CE, Dasso S, Daumiller K, Dawson BR, Day JA, de Almeida RM, de Jesús J, de Jong SJ, de Mello Neto JRT, De Mitri I, de Oliveira J, de Oliveira Franco D, de Palma F, de Souza V, De Vito E, Del Popolo A, Del Río M, Deligny O, Deval L, di Matteo A, Dobre M, Dobrigkeit C, D'Olivo JC, Domingues Mendes LM, Dos Anjos RC, Dova MT, Ebr J, Engel R, Epicoco I, Erdmann M, Escobar CO, Etchegoyen A, Falcke H, Farmer J, Farrar G, Fauth AC, Fazzini N, Feldbusch F, Fenu F, Fick B, Figueira JM, Filipčič A, Fitoussi T, Fodran T, Fujii T, Fuster A, Galea C, Galelli C, García B, Garcia Vegas AL, Gemmeke H, Gesualdi F, Gherghel-Lascu A, Ghia PL, Giaccari U, Giammarchi M, Glombitza J, Gobbi F, Gollan F, Golup G, Gómez Berisso M, Gómez Vitale PF, Gongora JP, González JM, González N, Goos I, Góra D, Gorgi A, Gottowik M, Grubb TD, Guarino F, Guedes GP, Guido E, Hahn S, Hamal P, Hampel MR, Hansen P, Harari D, Harvey VM, Haungs A, Hebbeker T, Heck D, Hill GC, Hojvat C, Hörandel JR, Horvath P, Hrabovský M, Huege T, Insolia A, Isar PG, Janecek P, Johnsen JA, Jurysek J, Kääpä A, Kampert KH, Keilhauer B, Khakurdikar A, Kizakke Covilakam VV, Klages HO, Kleifges M, Kleinfeller J, Knapp F, Kunka N, Lago BL, Langner N, Leigui de Oliveira MA, Lenok V, Letessier-Selvon A, Lhenry-Yvon I, Lo Presti D, Lopes L, López R, Lu L, Luce Q, Lundquist JP, Machado Payeras A, Mancarella G, Mandat D, Manning BC, Manshanden J, Mantsch P, Marafico S, Mariani FM, Mariazzi AG, Mariş IC, Marsella G, Martello D, Martinelli S, Martínez Bravo O, Mastrodicasa M, Mathes HJ, Matthews J, Matthiae G, Mayotte E, Mayotte S, Mazur PO, Medina-Tanco G, Melo D, Menshikov A, Michal S, Micheletti MI, Miramonti L, Mollerach S, Montanet F, Morejon L, Morello C, Mostafá M, Müller AL, Muller MA, Mulrey K, Mussa R, Muzio M, Namasaka WM, Nasr-Esfahani A, Nellen L, Nicora G, Niculescu-Oglinzanu M, Niechciol M, Nitz D, Norwood I, Nosek D, Novotny V, Nožka L, Nucita A, Núñez LA, Oliveira C, Palatka M, Pallotta J, Papenbreer P, Parente G, Parra A, Pawlowsky J, Pech M, Pękala J, Pelayo R, Peña-Rodriguez J, Pereira Martins EE, Perez Armand J, Pérez Bertolli C, Perrone L, Petrera S, Petrucci C, Pierog T, Pimenta M, Pirronello V, Platino M, Pont B, Pothast M, Privitera P, Prouza M, Puyleart A, Querchfeld S, Rautenberg J, Ravignani D, Reininghaus M, Ridky J, Riehn F, Risse M, Rizi V, Rodrigues de Carvalho W, Rodriguez Rojo J, Roncoroni MJ, Rossoni S, Roth M, Roulet E, Rovero AC, Ruehl P, Saftoiu A, Saharan M, Salamida F, Salazar H, Salina G, Sanabria Gomez JD, Sánchez F, Santos EM, Santos E, Sarazin F, Sarmento R, Sarmiento-Cano C, Sato R, Savina P, Schäfer CM, Scherini V, Schieler H, Schimassek M, Schimp M, Schlüter F, Schmidt D, Scholten O, Schoorlemmer H, Schovánek P, Schröder FG, Schulte J, Schulz T, Sciutto SJ, Scornavacche M, Segreto A, Sehgal S, Shellard RC, Sigl G, Silli G, Sima O, Smau R, Šmída R, Sommers P, Soriano JF, Squartini R, Stadelmaier M, Stanca D, Stanič S, Stasielak J, Stassi P, Streich A, Suárez-Durán M, Sudholz T, Suomijärvi T, Supanitsky AD, Szadkowski Z, Tapia A, Taricco C, Timmermans C, Tkachenko O, Tobiska P, Todero Peixoto CJ, Tomé B, Torrès Z, Travaini A, Travnicek P, Trimarelli C, Tueros M, Ulrich R, Unger M, Vaclavek L, Vacula M, Valdés Galicia JF, Valore L, Varela E, Vásquez-Ramírez A, Veberič D, Ventura C, Vergara Quispe ID, Verzi V, Vicha J, Vink J, Vorobiov S, Wahlberg H, Watanabe C, Watson AA, Weindl A, Wiencke L, Wilczyński H, Wittkowski D, Wundheiler B, Yushkov A, Zapparrata O, Zas E, Zavrtanik D, Zavrtanik M, Zehrer L. Limits to Gauge Coupling in the Dark Sector Set by the Nonobservation of Instanton-Induced Decay of Super-Heavy Dark Matter in the Pierre Auger Observatory Data. Phys Rev Lett 2023; 130:061001. [PMID: 36827568 DOI: 10.1103/physrevlett.130.061001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 11/30/2022] [Accepted: 12/14/2022] [Indexed: 06/18/2023]
Abstract
Instantons, which are nonperturbative solutions to Yang-Mills equations, provide a signal for the occurrence of quantum tunneling between distinct classes of vacua. They can give rise to decays of particles otherwise forbidden. Using data collected at the Pierre Auger Observatory, we search for signatures of such instanton-induced processes that would be suggestive of super-heavy particles decaying in the Galactic halo. These particles could have been produced during the post-inflationary epoch and match the relic abundance of dark matter inferred today. The nonobservation of the signatures searched for allows us to derive a bound on the reduced coupling constant of gauge interactions in the dark sector: α_{X}≲0.09, for 10^{9}≲M_{X}/GeV<10^{19}. Conversely, we obtain that, for instance, a reduced coupling constant α_{X}=0.09 excludes masses M_{X}≳3×10^{13} GeV. In the context of dark matter production from gravitational interactions alone, we illustrate how these bounds are complementary to those obtained on the Hubble rate at the end of inflation from the nonobservation of tensor modes in the cosmological microwave background.
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Affiliation(s)
- P Abreu
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - M Aglietta
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- INFN, Sezione di Torino, Torino, Italy
| | - J M Albury
- University of Adelaide, Adelaide, S.A., Australia
| | - I Allekotte
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | | | - A Almela
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
| | - R Aloisio
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - J Alvarez-Muñiz
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | | | - J Ammerman Yebra
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - G A Anastasi
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- INFN, Sezione di Torino, Torino, Italy
| | - L Anchordoqui
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA
| | - B Andrada
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - S Andringa
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - C Aramo
- INFN, Sezione di Napoli, Napoli, Italy
| | | | - E Arnone
- INFN, Sezione di Torino, Torino, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
| | | | - H Asorey
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - P Assis
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - G Avila
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - E Avocone
- Gran Sasso Science Institute, L'Aquila, Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
| | - A M Badescu
- University Politehnica of Bucharest, Bucharest, Romania
| | - A Bakalova
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - A Balaceanu
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - F Barbato
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - J A Bellido
- University of Adelaide, Adelaide, S.A., Australia
- Universidad Nacional de San Agustin de Arequipa, Facultad de Ciencias Naturales y Formales, Arequipa, Peru
| | - C Berat
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
| | - M E Bertaina
- INFN, Sezione di Torino, Torino, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
| | - G Bhatta
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - P L Biermann
- Max-Planck-Institut für Radioastronomie, Bonn, Germany
| | - V Binet
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
| | - K Bismark
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | - T Bister
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - J Biteau
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
| | - J Blazek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - C Bleve
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
| | - J Blümer
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - M Boháčová
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - D Boncioli
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
| | - C Bonifazi
- International Center of Advanced Studies and Instituto de Ciencias Físicas, ECyT-UNSAM and CONICET, Campus Miguelete-San Martín, Buenos Aires, Argentina
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, RJ, Brazil
| | | | - N Borodai
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - A M Botti
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - J Brack
- Colorado State University, Fort Collins, Colorado, USA
| | - T Bretz
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - P G Brichetto Orchera
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - F L Briechle
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - P Buchholz
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - A Bueno
- Universidad de Granada and C.A.F.P.E., Granada, Spain
| | - S Buitink
- Vrije Universiteit Brussels, Brussels, Belgium
| | - M Buscemi
- INFN, Sezione di Catania, Catania, Italy
| | - M Büsken
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | | | - L Caccianiga
- Università di Milano, Dipartimento di Fisica, Milano, Italy
- INFN, Sezione di Milano, Milano, Italy
| | - F Canfora
- IMAPP, Radboud University Nijmegen, Nijmegen, Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, Netherlands
| | - I Caracas
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - R Caruso
- INFN, Sezione di Catania, Catania, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
| | - A Castellina
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- INFN, Sezione di Torino, Torino, Italy
| | - F Catalani
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, SP, Brazil
| | - G Cataldi
- INFN, Sezione di Lecce, Lecce, Italy
| | - L Cazon
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - M Cerda
- Observatorio Pierre Auger, Malargüe, Argentina
| | - J A Chinellato
- Universidade Estadual de Campinas, IFGW, Campinas, SP, Brazil
| | - J Chudoba
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - L Chytka
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - R W Clay
- University of Adelaide, Adelaide, S.A., Australia
| | - A C Cobos Cerutti
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
| | - R Colalillo
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Napoli "Federico II," Dipartimento di Fisica "Ettore Pancini," Napoli, Italy
| | - A Coleman
- University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, Delaware, USA
| | | | - R Conceição
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - A Condorelli
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - G Consolati
- INFN, Sezione di Milano, Milano, Italy
- Politecnico di Milano, Dipartimento di Scienze e Tecnologie Aerospaziali, Milano, Italy
| | - F Contreras
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - F Convenga
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | | | - C E Covault
- Case Western Reserve University, Cleveland, Ohio, USA
| | - S Dasso
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
- Departamento de Física and Departamento de Ciencias de la Atmósfera y los Océanos, FCEyN, Universidad de Buenos Aires and CONICET, Buenos Aires, Argentina
| | - K Daumiller
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - B R Dawson
- University of Adelaide, Adelaide, S.A., Australia
| | - J A Day
- University of Adelaide, Adelaide, S.A., Australia
| | - R M de Almeida
- Universidade Federal Fluminense, EEIMVR, Volta Redonda, RJ, Brazil
| | - J de Jesús
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - S J de Jong
- IMAPP, Radboud University Nijmegen, Nijmegen, Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, Netherlands
| | - J R T de Mello Neto
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, RJ, Brazil
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, RJ, Brazil
| | - I De Mitri
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - J de Oliveira
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Brazil
| | | | - F de Palma
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
| | - V de Souza
- Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, SP, Brazil
| | - E De Vito
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
| | - A Del Popolo
- INFN, Sezione di Catania, Catania, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
| | - M Del Río
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - O Deligny
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
| | - L Deval
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | | | - M Dobre
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - C Dobrigkeit
- Universidade Estadual de Campinas, IFGW, Campinas, SP, Brazil
| | - J C D'Olivo
- Universidad Nacional Autónoma de México, México, D.F., México
| | - L M Domingues Mendes
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - R C Dos Anjos
- Universidade Federal do Paraná, Setor Palotina, Palotina, Brazil
| | - M T Dova
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - J Ebr
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - R Engel
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - I Epicoco
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
| | - M Erdmann
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - C O Escobar
- Fermi National Accelerator Laboratory, Fermilab, Batavia, Illinois, USA
| | - A Etchegoyen
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
| | - H Falcke
- IMAPP, Radboud University Nijmegen, Nijmegen, Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, Netherlands
- Stichting Astronomisch Onderzoek in Nederland (ASTRON), Dwingeloo, Netherlands
| | - J Farmer
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
| | - G Farrar
- New York University, New York, New York, USA
| | - A C Fauth
- Universidade Estadual de Campinas, IFGW, Campinas, SP, Brazil
| | - N Fazzini
- Fermi National Accelerator Laboratory, Fermilab, Batavia, Illinois, USA
| | - F Feldbusch
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - F Fenu
- INFN, Sezione di Torino, Torino, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
| | - B Fick
- Michigan Technological University, Houghton, Michigan, USA
| | - J M Figueira
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - A Filipčič
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - T Fitoussi
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - T Fodran
- IMAPP, Radboud University Nijmegen, Nijmegen, Netherlands
| | - T Fujii
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
- Present address: Hakubi Center for Advanced Research and Graduate School of Science, Kyoto University, Kyoto, Japan
| | - A Fuster
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
| | - C Galea
- IMAPP, Radboud University Nijmegen, Nijmegen, Netherlands
| | - C Galelli
- Università di Milano, Dipartimento di Fisica, Milano, Italy
- INFN, Sezione di Milano, Milano, Italy
| | - B García
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
| | - A L Garcia Vegas
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - H Gemmeke
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - F Gesualdi
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - A Gherghel-Lascu
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - P L Ghia
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
| | - U Giaccari
- IMAPP, Radboud University Nijmegen, Nijmegen, Netherlands
| | | | - J Glombitza
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - F Gobbi
- Observatorio Pierre Auger, Malargüe, Argentina
| | - F Gollan
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - G Golup
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - M Gómez Berisso
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - P F Gómez Vitale
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - J P Gongora
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - J M González
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - N González
- Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - I Goos
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - D Góra
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - A Gorgi
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- INFN, Sezione di Torino, Torino, Italy
| | - M Gottowik
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - T D Grubb
- University of Adelaide, Adelaide, S.A., Australia
| | - F Guarino
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Napoli "Federico II," Dipartimento di Fisica "Ettore Pancini," Napoli, Italy
| | - G P Guedes
- Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
| | - E Guido
- INFN, Sezione di Torino, Torino, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
| | - S Hahn
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - P Hamal
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - M R Hampel
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - P Hansen
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - D Harari
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - V M Harvey
- University of Adelaide, Adelaide, S.A., Australia
| | - A Haungs
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - T Hebbeker
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - D Heck
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - G C Hill
- University of Adelaide, Adelaide, S.A., Australia
| | - C Hojvat
- Fermi National Accelerator Laboratory, Fermilab, Batavia, Illinois, USA
| | - J R Hörandel
- IMAPP, Radboud University Nijmegen, Nijmegen, Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, Netherlands
| | - P Horvath
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - M Hrabovský
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - T Huege
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
- Vrije Universiteit Brussels, Brussels, Belgium
| | - A Insolia
- INFN, Sezione di Catania, Catania, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
| | - P G Isar
- Institute of Space Science, Bucharest-Magurele, Romania
| | - P Janecek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - J A Johnsen
- Colorado School of Mines, Golden, Colorado, USA
| | - J Jurysek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - A Kääpä
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - K H Kampert
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - B Keilhauer
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - A Khakurdikar
- IMAPP, Radboud University Nijmegen, Nijmegen, Netherlands
| | - V V Kizakke Covilakam
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - H O Klages
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - M Kleifges
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | | | - F Knapp
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | - N Kunka
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - B L Lago
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Nova Friburgo, Brazil
| | - N Langner
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | | | - V Lenok
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - A Letessier-Selvon
- Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Sorbonne Université, Université de Paris, CNRS-IN2P3, Paris, France
| | - I Lhenry-Yvon
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
| | - D Lo Presti
- INFN, Sezione di Catania, Catania, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
| | - L Lopes
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - R López
- Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - L Lu
- University of Wisconsin-Madison, Department of Physics and WIPAC, Madison, Wisconsin, USA
| | - Q Luce
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | - J P Lundquist
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | | | - G Mancarella
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
| | - D Mandat
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - B C Manning
- University of Adelaide, Adelaide, S.A., Australia
| | - J Manshanden
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
| | - P Mantsch
- Fermi National Accelerator Laboratory, Fermilab, Batavia, Illinois, USA
| | - S Marafico
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
| | - F M Mariani
- Università di Milano, Dipartimento di Fisica, Milano, Italy
- INFN, Sezione di Milano, Milano, Italy
| | - A G Mariazzi
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - I C Mariş
- Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - G Marsella
- INFN, Sezione di Catania, Catania, Italy
- Università di Palermo, Dipartimento di Fisica e Chimica "E. Segrè," Palermo, Italy
| | - D Martello
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
| | - S Martinelli
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | | | - M Mastrodicasa
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
| | - H J Mathes
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - J Matthews
- Louisiana State University, Baton Rouge, Louisiana, USA
| | - G Matthiae
- Università di Roma "Tor Vergata," Dipartimento di Fisica, Roma, Italy
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
| | - E Mayotte
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
- Colorado School of Mines, Golden, Colorado, USA
| | - S Mayotte
- Colorado School of Mines, Golden, Colorado, USA
| | - P O Mazur
- Fermi National Accelerator Laboratory, Fermilab, Batavia, Illinois, USA
| | - G Medina-Tanco
- Universidad Nacional Autónoma de México, México, D.F., México
| | - D Melo
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - A Menshikov
- Karlsruhe Institute of Technology (KIT), Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - S Michal
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - M I Micheletti
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
| | - L Miramonti
- Università di Milano, Dipartimento di Fisica, Milano, Italy
- INFN, Sezione di Milano, Milano, Italy
| | - S Mollerach
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - F Montanet
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
| | - L Morejon
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - C Morello
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- INFN, Sezione di Torino, Torino, Italy
| | - M Mostafá
- Pennsylvania State University, University Park, Pennsylvania, USA
| | - A L Müller
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - M A Muller
- Universidade Estadual de Campinas, IFGW, Campinas, SP, Brazil
| | - K Mulrey
- IMAPP, Radboud University Nijmegen, Nijmegen, Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, Netherlands
| | - R Mussa
- INFN, Sezione di Torino, Torino, Italy
| | - M Muzio
- New York University, New York, New York, USA
| | - W M Namasaka
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - A Nasr-Esfahani
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - L Nellen
- Universidad Nacional Autónoma de México, México, D.F., México
| | - G Nicora
- Centro de Investigaciones en Láseres y Aplicaciones, CITEDEF and CONICET, Villa Martelli, Argentina
| | - M Niculescu-Oglinzanu
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - M Niechciol
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - D Nitz
- Michigan Technological University, Houghton, Michigan, USA
| | - I Norwood
- Michigan Technological University, Houghton, Michigan, USA
| | - D Nosek
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
| | - V Novotny
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
| | - L Nožka
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - A Nucita
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
| | - L A Núñez
- Universidad Industrial de Santander, Bucaramanga, Colombia
| | - C Oliveira
- Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, SP, Brazil
| | - M Palatka
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - J Pallotta
- Centro de Investigaciones en Láseres y Aplicaciones, CITEDEF and CONICET, Villa Martelli, Argentina
| | - P Papenbreer
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - G Parente
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - A Parra
- Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - J Pawlowsky
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - M Pech
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - J Pękala
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - R Pelayo
- Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional (UPIITA-IPN), México, D.F., México
| | | | - E E Pereira Martins
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | - J Perez Armand
- Universidade de São Paulo, Instituto de Física, São Paulo, SP, Brazil
| | - C Pérez Bertolli
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - L Perrone
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
| | - S Petrera
- Gran Sasso Science Institute, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - C Petrucci
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
| | - T Pierog
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - M Pimenta
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - V Pirronello
- INFN, Sezione di Catania, Catania, Italy
- Università di Catania, Dipartimento di Fisica e Astronomia "Ettore Majorana," Catania, Italy
| | - M Platino
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - B Pont
- IMAPP, Radboud University Nijmegen, Nijmegen, Netherlands
| | - M Pothast
- IMAPP, Radboud University Nijmegen, Nijmegen, Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, Netherlands
| | - P Privitera
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
| | - M Prouza
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - A Puyleart
- Michigan Technological University, Houghton, Michigan, USA
| | - S Querchfeld
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - J Rautenberg
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - D Ravignani
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - M Reininghaus
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - J Ridky
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - F Riehn
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - M Risse
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - V Rizi
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
| | | | - J Rodriguez Rojo
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - M J Roncoroni
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - S Rossoni
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
| | - M Roth
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - E Roulet
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - A C Rovero
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
| | - P Ruehl
- Universität Siegen, Department Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - A Saftoiu
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - M Saharan
- IMAPP, Radboud University Nijmegen, Nijmegen, Netherlands
| | - F Salamida
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
| | - H Salazar
- Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - G Salina
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
| | | | - F Sánchez
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - E M Santos
- Universidade de São Paulo, Instituto de Física, São Paulo, SP, Brazil
| | - E Santos
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - F Sarazin
- Colorado School of Mines, Golden, Colorado, USA
| | - R Sarmento
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - C Sarmiento-Cano
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - R Sato
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - P Savina
- University of Wisconsin-Madison, Department of Physics and WIPAC, Madison, Wisconsin, USA
| | - C M Schäfer
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - V Scherini
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi," Lecce, Italy
| | - H Schieler
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - M Schimassek
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | - M Schimp
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - F Schlüter
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - D Schmidt
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | - O Scholten
- Vrije Universiteit Brussels, Brussels, Belgium
| | - H Schoorlemmer
- IMAPP, Radboud University Nijmegen, Nijmegen, Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, Netherlands
| | - P Schovánek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - F G Schröder
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
- University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, Delaware, USA
| | - J Schulte
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - T Schulz
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - S J Sciutto
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - M Scornavacche
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - A Segreto
- INFN, Sezione di Catania, Catania, Italy
- Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy
| | - S Sehgal
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - R C Shellard
- Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, RJ, Brazil
| | - G Sigl
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
| | - G Silli
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - O Sima
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
- Also at University of Bucharest, Physics Department, Bucharest, Romania
| | - R Smau
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - R Šmída
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
| | - P Sommers
- Pennsylvania State University, University Park, Pennsylvania, USA
| | - J F Soriano
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA
| | - R Squartini
- Observatorio Pierre Auger, Malargüe, Argentina
| | - M Stadelmaier
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - D Stanca
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - S Stanič
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - J Stasielak
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - P Stassi
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
| | - A Streich
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology (KIT), Institute for Experimental Particle Physics, Karlsruhe, Germany
| | | | - T Sudholz
- University of Adelaide, Adelaide, S.A., Australia
| | - T Suomijärvi
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
| | - A D Supanitsky
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - Z Szadkowski
- University of Łódź, Faculty of High-Energy Astrophysics, Łódź, Poland
| | - A Tapia
- Universidad de Medellín, Medellín, Colombia
| | - C Taricco
- INFN, Sezione di Torino, Torino, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
| | - C Timmermans
- IMAPP, Radboud University Nijmegen, Nijmegen, Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, Netherlands
| | - O Tkachenko
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - P Tobiska
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - C J Todero Peixoto
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, SP, Brazil
| | - B Tomé
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - Z Torrès
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
| | - A Travaini
- Observatorio Pierre Auger, Malargüe, Argentina
| | - P Travnicek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - C Trimarelli
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
| | - M Tueros
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - R Ulrich
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - M Unger
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - L Vaclavek
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - M Vacula
- Palacky University, RCPTM, Olomouc, Czech Republic
| | | | - L Valore
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Napoli "Federico II," Dipartimento di Fisica "Ettore Pancini," Napoli, Italy
| | - E Varela
- Benemérita Universidad Autónoma de Puebla, Puebla, México
| | | | - D Veberič
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - C Ventura
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, RJ, Brazil
| | | | - V Verzi
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
| | - J Vicha
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - J Vink
- Universiteit van Amsterdam, Faculty of Science, Amsterdam, Netherlands
| | - S Vorobiov
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - H Wahlberg
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - C Watanabe
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, RJ, Brazil
| | - A A Watson
- School of Physics and Astronomy, University of Leeds, Leeds, United Kingdom
| | - A Weindl
- Karlsruhe Institute of Technology (KIT), Institute for Astroparticle Physics, Karlsruhe, Germany
| | - L Wiencke
- Colorado School of Mines, Golden, Colorado, USA
| | - H Wilczyński
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - D Wittkowski
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - B Wundheiler
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - A Yushkov
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - O Zapparrata
- Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - E Zas
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - D Zavrtanik
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - M Zavrtanik
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - L Zehrer
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
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6
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Huck S, Auzins M, Bergmann B, Burian P, Brusa RS, Camper A, Caravita R, Castelli F, Ciuryło R, Consolati G, Doser M, Farricker A, Glöggler LT, Graczykowski Ł, Grosbart M, Guatieri F, Gusakova N, Haider S, Janik M, Kasprowicz G, Khatri G, Kłosowski Ł, Kornakov G, Krumins V, Lappo L, Linek A, Malbrunot C, Mariazzi S, Nowak L, Nowicka D, Oswald E, Penasa L, Petracek V, Piwiński M, Pospisil S, Povolo L, Prelz F, Rangwala S, Rienäcker B, Rodin V, Røhne OM, Sandaker H, Smolyanskiy P, Sowiński T, Tefelski D, Volponi M, Welsch C, Wolz T, Zawada M, Zielinski J, Zimmer C, Zurlo N. Toward a pulsed antihydrogen beam for WEP tests in AEgIS. EPJ Web Conf 2023. [DOI: 10.1051/epjconf/202328201005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
The AEg̅IS collaboration at CERN’s AD produces antihydrogen atoms in the form of a pulsed, isotropic source with a precisely defined formation time. AEg̅IS has recently undergone major upgrades to fully benefit from the increased number of colder antiprotons provided by the new ELENA decelerator and to move toward forming a horizontal beam to directly investigate the influence of gravity on the H̅ atoms, thereby probing the Weak Equivalence Principle for antimatter. This contribution gives an overview of these upgrades as well as subsequent results from the first beam times with ELENA.
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7
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Consolati G, Nichetti D, Quasso F. Free Volume Expansion in some
Polybutadiene‐Acrylonitrile
Rubbers: Comparison between Theory and Experiments. POLYM INT 2022. [DOI: 10.1002/pi.6431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Giovanni Consolati
- Department of Aerospace Science and Technology Politecnico di Milano, Via LaMasa, 34 20156 Milano Italy
- INFN, Sezione di Milano, via Celoria, 16 20133 Milano Italy
| | | | - Fiorenza Quasso
- Department of Aerospace Science and Technology Politecnico di Milano, Via LaMasa, 34 20156 Milano Italy
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8
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Consolati G, Quasso F, Yaynik E, Briatico Vangosa F, Šauša O, Ehrmann K, Švajdlenková H. Thermal expansion of free volume in "classic" and regulated dimethacrylates: photocured directly and via a mask to study pillar formation. Phys Chem Chem Phys 2022; 24:14299-14309. [PMID: 35642648 DOI: 10.1039/d2cp00882c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The temperature dependence of free volume in dimethacrylates (poly2M), cured by direct irradiation (poly2M-A) or via a mask (poly2M-B), and in a thiol-based 2M sample (poly2M-co-EDDT), was investigated by positron annihilation lifetime spectroscopy (PALS) and dilatometry (DIL) to study the influence of thiol regulation on the microstructure via free volume characteristics. It was found that the free volume fraction as determined from experimental data by using the standard spherical approach for the hole shapes showed systematic differences from the analogous quantity as evaluated from the lattice-hole theory. Much better results were obtained for cylindrical holes, which expand 'anisotropically' in poly2M samples and 'isotropically' in the poly2M-co-EDDT resin. In addition, the hydrogen bond changes and the conversion of monomers in cured samples studied by near infra-red spectroscopy (NIR) revealed spectrum-structure correlations for the final cured thermosets.
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Affiliation(s)
- Giovanni Consolati
- Department of Aerospace Science and Technology, Politecnico di Milano, via La Masa 34, 20156, Milano, Italy.
| | - Fiorenza Quasso
- Department of Aerospace Science and Technology, Politecnico di Milano, via La Masa 34, 20156, Milano, Italy.
| | - Erkin Yaynik
- Department of Aerospace Science and Technology, Politecnico di Milano, via La Masa 34, 20156, Milano, Italy.
| | - Francesco Briatico Vangosa
- Department of Chemistry, Materials and Chemical Engineering 'Giulio Natta', Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milano, Italy
| | - Ondrej Šauša
- Department of Nuclear Physics, Institute of Physics of SAS, Dúbravská cesta 9, 845 11, Bratislava, Slovakia.,Department of Nuclear Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15, Bratislava, Slovakia
| | - Katharina Ehrmann
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163 MC, 1060, Vienna, Austria
| | - Helena Švajdlenková
- Department of Synthesis and Characterization of polymers, Polymer Institute of SAS, Dúbravská cesta 9, 845 41, Bratislava, Slovakia.
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9
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Aab A, Abreu P, Aglietta M, Albury JM, Allekotte I, Almela A, Alvarez-Muñiz J, Alves Batista R, Anastasi GA, Anchordoqui L, Andrada B, Andringa S, Aramo C, Araújo Ferreira PR, Asorey H, Assis P, Avila G, Badescu AM, Bakalova A, Balaceanu A, Barbato F, Barreira Luz RJ, Becker KH, Bellido JA, Berat C, Bertaina ME, Bertou X, Biermann PL, Bister T, Biteau J, Blazek J, Bleve C, Boháčová M, Boncioli D, Bonifazi C, Bonneau Arbeletche L, Borodai N, Botti AM, Brack J, Bretz T, Briechle FL, Buchholz P, Bueno A, Buitink S, Buscemi M, Caballero-Mora KS, Caccianiga L, Cancio A, Canfora F, Caracas I, Carceller JM, Caruso R, Castellina A, Catalani F, Cataldi G, Cazon L, Cerda M, Chinellato JA, Choi K, Chudoba J, Chytka L, Clay RW, Cobos Cerutti AC, Colalillo R, Coleman A, Coluccia MR, Conceição R, Condorelli A, Consolati G, Contreras F, Convenga F, Covault CE, Dasso S, Daumiller K, Dawson BR, Day JA, de Almeida RM, de Jesús J, de Jong SJ, De Mauro G, de Mello Neto JRT, De Mitri I, de Oliveira J, de Oliveira Franco D, de Souza V, De Vito E, Debatin J, Del Río M, Deligny O, Dembinski H, Dhital N, Di Matteo A, Dobrigkeit C, D'Olivo JC, Dos Anjos RC, Dova MT, Ebr J, Engel R, Epicoco I, Erdmann M, Escobar CO, Etchegoyen A, Falcke H, Farmer J, Farrar G, Fauth AC, Fazzini N, Feldbusch F, Fenu F, Fick B, Figueira JM, Filipčič A, Fodran T, Freire MM, Fujii T, Fuster A, Galea C, Galelli C, García B, Garcia Vegas AL, Gemmeke H, Gesualdi F, Gherghel-Lascu A, Ghia PL, Giaccari U, Giammarchi M, Giller M, Glombitza J, Gobbi F, Gollan F, Golup G, Gómez Berisso M, Gómez Vitale PF, Gongora JP, González N, Goos I, Góra D, Gorgi A, Gottowik M, Grubb TD, Guarino F, Guedes GP, Guido E, Hahn S, Halliday R, Hampel MR, Hansen P, Harari D, Harvey VM, Haungs A, Hebbeker T, Heck D, Hill GC, Hojvat C, Hörandel JR, Horvath P, Hrabovský M, Huege T, Hulsman J, Insolia A, Isar PG, Johnsen JA, Jurysek J, Kääpä A, Kampert KH, Keilhauer B, Kemp J, Klages HO, Kleifges M, Kleinfeller J, Köpke M, Kukec Mezek G, Lago BL, LaHurd D, Lang RG, Langner N, Leigui de Oliveira MA, Lenok V, Letessier-Selvon A, Lhenry-Yvon I, Lo Presti D, Lopes L, López R, Lorek R, Luce Q, Lucero A, Lundquist JP, Machado Payeras A, Mancarella G, Mandat D, Manning BC, Manshanden J, Mantsch P, Marafico S, Mariazzi AG, Mariş IC, Marsella G, Martello D, Martinez H, Martínez Bravo O, Mastrodicasa M, Mathes HJ, Matthews J, Matthiae G, Mayotte E, Mazur PO, Medina-Tanco G, Melo D, Menshikov A, Merenda KD, Michal S, Micheletti MI, Miramonti L, Mollerach S, Montanet F, Morello C, Mostafá M, Müller AL, Muller MA, Mulrey K, Mussa R, Muzio M, Namasaka WM, Nellen L, Niculescu-Oglinzanu M, Niechciol M, Nitz D, Nosek D, Novotny V, Nožka L, Nucita A, Núñez LA, Palatka M, Pallotta J, Papenbreer P, Parente G, Parra A, Pech M, Pedreira F, Pȩkala J, Pelayo R, Peña-Rodriguez J, Perez Armand J, Perlin M, Perrone L, Petrera S, Pierog T, Pimenta M, Pirronello V, Platino M, Pont B, Pothast M, Privitera P, Prouza M, Puyleart A, Querchfeld S, Rautenberg J, Ravignani D, Reininghaus M, Ridky J, Riehn F, Risse M, Ristori P, Rizi V, Rodrigues de Carvalho W, Rodriguez Rojo J, Roncoroni MJ, Roth M, Roulet E, Rovero AC, Ruehl P, Saffi SJ, Saftoiu A, Salamida F, Salazar H, Salina G, Sanabria Gomez JD, Sánchez F, Santos EM, Santos E, Sarazin F, Sarmento R, Sarmiento-Cano C, Sato R, Savina P, Schäfer CM, Scherini V, Schieler H, Schimassek M, Schimp M, Schlüter F, Schmidt D, Scholten O, Schovánek P, Schröder FG, Schröder S, Schulte J, Sciutto SJ, Scornavacche M, Shellard RC, Sigl G, Silli G, Sima O, Šmída R, Sommers P, Soriano JF, Souchard J, Squartini R, Stadelmaier M, Stanca D, Stanič S, Stasielak J, Stassi P, Streich A, Suárez-Durán M, Sudholz T, Suomijärvi T, Supanitsky AD, Šupík J, Szadkowski Z, Taboada A, Tapia A, Timmermans C, Tkachenko O, Tobiska P, Todero Peixoto CJ, Tomé B, Torralba Elipe G, Travaini A, Travnicek P, Trimarelli C, Trini M, Tueros M, Ulrich R, Unger M, Vaclavek L, Vacula M, Valdés Galicia JF, Valiño I, Valore L, Varela E, Varma K C V, Vásquez-Ramírez A, Veberič D, Ventura C, Vergara Quispe ID, Verzi V, Vicha J, Vink J, Vorobiov S, Wahlberg H, Watson AA, Weber M, Weindl A, Wiencke L, Wilczyński H, Winchen T, Wirtz M, Wittkowski D, Wundheiler B, Yushkov A, Zapparrata O, Zas E, Zavrtanik D, Zavrtanik M, Zehrer L, Zepeda A. Measurement of the Fluctuations in the Number of Muons in Extensive Air Showers with the Pierre Auger Observatory. Phys Rev Lett 2021; 126:152002. [PMID: 33929235 DOI: 10.1103/physrevlett.126.152002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 01/28/2021] [Accepted: 02/12/2021] [Indexed: 06/12/2023]
Abstract
We present the first measurement of the fluctuations in the number of muons in extensive air showers produced by ultrahigh energy cosmic rays. We find that the measured fluctuations are in good agreement with predictions from air shower simulations. This observation provides new insights into the origin of the previously reported deficit of muons in air shower simulations and constrains models of hadronic interactions at ultrahigh energies. Our measurement is compatible with the muon deficit originating from small deviations in the predictions from hadronic interaction models of particle production that accumulate as the showers develop.
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Affiliation(s)
- A Aab
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - P Abreu
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - M Aglietta
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- INFN, Sezione di Torino, Torino, Italy
| | - J M Albury
- University of Adelaide, Adelaide, South Australia, Australia
| | - I Allekotte
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - A Almela
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
| | - J Alvarez-Muñiz
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - R Alves Batista
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - G A Anastasi
- INFN, Sezione di Torino, Torino, Italy
- Dipartimento di Fisica, Università Torino, Torino, Italy
| | - L Anchordoqui
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA
| | - B Andrada
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - S Andringa
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - C Aramo
- INFN, Sezione di Napoli, Napoli, Italy
| | | | - H Asorey
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - P Assis
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - G Avila
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - A M Badescu
- University Politehnica of Bucharest, Bucharest, Romania
| | - A Bakalova
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - A Balaceanu
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - F Barbato
- INFN, Sezione di Napoli, Napoli, Italy
- Dipartimento di Fisica "Ettore Pancini," Università di Napoli "Federico II," Napoli, Italy
| | - R J Barreira Luz
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - K H Becker
- Department of Physics, Bergische Universität Wuppertal, Wuppertal, Germany
| | - J A Bellido
- University of Adelaide, Adelaide, South Australia, Australia
| | - C Berat
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
| | - M E Bertaina
- INFN, Sezione di Torino, Torino, Italy
- Dipartimento di Fisica, Università Torino, Torino, Italy
| | - X Bertou
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - P L Biermann
- Max-Planck-Institut für Radioastronomie, Bonn, Germany
| | - T Bister
- III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany
| | - J Biteau
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
| | - J Blazek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - C Bleve
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
| | - M Boháčová
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - D Boncioli
- Dipartimento di Scienze Fisiche e Chimiche, Università dell'Aquila, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - C Bonifazi
- Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - N Borodai
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - A M Botti
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - J Brack
- Colorado State University, Fort Collins, Colorado, USA
| | - T Bretz
- III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany
| | - F L Briechle
- III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany
| | - P Buchholz
- Universität Siegen, Fachbereich 7 Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - A Bueno
- Universidad de Granada and C.A.F.P.E., Granada, Spain
| | - S Buitink
- Vrije Universiteit Brussels, Brussels, Belgium
| | - M Buscemi
- Dipartimento di Fisica e Astronomia, Università di Catania, Catania, Italy
- INFN, Sezione di Catania, Catania, Italy
| | | | - L Caccianiga
- Dipartimento di Fisica, Università di Milano, Milano, Italy
- INFN, Sezione di Milano, Milano, Italy
| | - A Cancio
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
| | - F Canfora
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - I Caracas
- Department of Physics, Bergische Universität Wuppertal, Wuppertal, Germany
| | - J M Carceller
- Universidad de Granada and C.A.F.P.E., Granada, Spain
| | - R Caruso
- Dipartimento di Fisica e Astronomia, Università di Catania, Catania, Italy
- INFN, Sezione di Catania, Catania, Italy
| | - A Castellina
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- INFN, Sezione di Torino, Torino, Italy
| | - F Catalani
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, São Paulo, Brazil
| | - G Cataldi
- INFN, Sezione di Lecce, Lecce, Italy
| | - L Cazon
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - M Cerda
- Observatorio Pierre Auger, Malargüe, Argentina
| | - J A Chinellato
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
| | - K Choi
- Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - J Chudoba
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - L Chytka
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - R W Clay
- University of Adelaide, Adelaide, South Australia, Australia
| | - A C Cobos Cerutti
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
| | - R Colalillo
- INFN, Sezione di Napoli, Napoli, Italy
- Dipartimento di Fisica "Ettore Pancini," Università di Napoli "Federico II," Napoli, Italy
| | - A Coleman
- Department of Physics and Astronomy, Bartol Research Institute, University of Delaware, Newark, Delaware, USA
| | - M R Coluccia
- INFN, Sezione di Lecce, Lecce, Italy
- Dipartimento di Matematica e Fisica "E. De Giorgi," Università del Salento, Lecce, Italy
| | - R Conceição
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - A Condorelli
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Gran Sasso Science Institute, L'Aquila, Italy
| | - G Consolati
- INFN, Sezione di Milano, Milano, Italy
- Dipartimento di Scienze e Tecnologie Aerospaziali, Politecnico di Milano, Milano, Italy
| | - F Contreras
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - F Convenga
- INFN, Sezione di Lecce, Lecce, Italy
- Dipartimento di Matematica e Fisica "E. De Giorgi," Università del Salento, Lecce, Italy
| | - C E Covault
- Case Western Reserve University, Cleveland, Ohio, USA
| | - S Dasso
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
- Departamento de Física and Departamento de Ciencias de la Atmósfera y los Océanos, FCEyN, Universidad de Buenos Aires and CONICET, Buenos Aires, Argentina
| | - K Daumiller
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - B R Dawson
- University of Adelaide, Adelaide, South Australia, Australia
| | - J A Day
- University of Adelaide, Adelaide, South Australia, Australia
| | - R M de Almeida
- Universidade Federal Fluminense, EEIMVR, Volta Redonda, Rio de Janeiro, Brazil
| | - J de Jesús
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - S J de Jong
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - G De Mauro
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - J R T de Mello Neto
- Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, Brazil
| | - I De Mitri
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Gran Sasso Science Institute, L'Aquila, Italy
| | - J de Oliveira
- Universidade Federal Fluminense, EEIMVR, Volta Redonda, Rio de Janeiro, Brazil
| | | | - V de Souza
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, São Paulo, Brazil
| | - E De Vito
- INFN, Sezione di Lecce, Lecce, Italy
- Dipartimento di Matematica e Fisica "E. De Giorgi," Università del Salento, Lecce, Italy
| | - J Debatin
- Karlsruhe Institute of Technology, Institute for Experimental Particle Physics (ETP), Karlsruhe, Germany
| | - M Del Río
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - O Deligny
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
| | - H Dembinski
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - N Dhital
- Institute of Nuclear Physics PAN, Krakow, Poland
| | | | - C Dobrigkeit
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
| | - J C D'Olivo
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
| | - R C Dos Anjos
- Universidade Federal do Paraná, Setor Palotina, Palotina, Brazil
| | - M T Dova
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - J Ebr
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - R Engel
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
- Karlsruhe Institute of Technology, Institute for Experimental Particle Physics (ETP), Karlsruhe, Germany
| | - I Epicoco
- INFN, Sezione di Lecce, Lecce, Italy
- Dipartimento di Matematica e Fisica "E. De Giorgi," Università del Salento, Lecce, Italy
| | - M Erdmann
- III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany
| | - C O Escobar
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - A Etchegoyen
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
| | - H Falcke
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
- Stichting Astronomisch Onderzoek in Nederland (ASTRON), Dwingeloo, The Netherlands
| | - J Farmer
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
| | - G Farrar
- New York University, New York, New York, USA
| | - A C Fauth
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
| | - N Fazzini
- Fermi National Accelerator Laboratory, Fermilab, Batavia, Illinois, USA
| | - F Feldbusch
- Karlsruhe Institute of Technology, Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - F Fenu
- INFN, Sezione di Torino, Torino, Italy
- Dipartimento di Fisica, Università Torino, Torino, Italy
| | - B Fick
- Michigan Technological University, Houghton, Michigan, USA
| | - J M Figueira
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - A Filipčič
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - T Fodran
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - M M Freire
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas Universidad Nacional de Rosario, Rosario, Argentina
| | - T Fujii
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
| | - A Fuster
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
| | - C Galea
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - C Galelli
- Dipartimento di Fisica, Università di Milano, Milano, Italy
- INFN, Sezione di Milano, Milano, Italy
| | - B García
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
| | - A L Garcia Vegas
- III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany
| | - H Gemmeke
- Karlsruhe Institute of Technology, Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - F Gesualdi
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - A Gherghel-Lascu
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - P L Ghia
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
| | - U Giaccari
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | | | - M Giller
- Faculty of Astrophysics, University of Łódź, Łódź, Poland
| | - J Glombitza
- III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany
| | - F Gobbi
- Observatorio Pierre Auger, Malargüe, Argentina
| | - F Gollan
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - G Golup
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - M Gómez Berisso
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - P F Gómez Vitale
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - J P Gongora
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - N González
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - I Goos
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - D Góra
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - A Gorgi
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- INFN, Sezione di Torino, Torino, Italy
| | - M Gottowik
- Department of Physics, Bergische Universität Wuppertal, Wuppertal, Germany
| | - T D Grubb
- University of Adelaide, Adelaide, South Australia, Australia
| | - F Guarino
- INFN, Sezione di Napoli, Napoli, Italy
- Dipartimento di Fisica "Ettore Pancini," Università di Napoli "Federico II," Napoli, Italy
| | - G P Guedes
- Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
| | - E Guido
- INFN, Sezione di Torino, Torino, Italy
- Dipartimento di Fisica, Università Torino, Torino, Italy
| | - S Hahn
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - R Halliday
- Case Western Reserve University, Cleveland, Ohio, USA
| | - M R Hampel
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - P Hansen
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - D Harari
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - V M Harvey
- University of Adelaide, Adelaide, South Australia, Australia
| | - A Haungs
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - T Hebbeker
- III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany
| | - D Heck
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - G C Hill
- University of Adelaide, Adelaide, South Australia, Australia
| | - C Hojvat
- Fermi National Accelerator Laboratory, Fermilab, Batavia, Illinois, USA
| | - J R Hörandel
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - P Horvath
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - M Hrabovský
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - T Huege
- Vrije Universiteit Brussels, Brussels, Belgium
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - J Hulsman
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - A Insolia
- Dipartimento di Fisica e Astronomia, Università di Catania, Catania, Italy
- INFN, Sezione di Catania, Catania, Italy
| | - P G Isar
- Institute of Space Science, Bucharest-Magurele, Romania
| | - J A Johnsen
- Colorado School of Mines, Golden, Colorado, USA
| | - J Jurysek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - A Kääpä
- Department of Physics, Bergische Universität Wuppertal, Wuppertal, Germany
| | - K H Kampert
- Department of Physics, Bergische Universität Wuppertal, Wuppertal, Germany
| | - B Keilhauer
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - J Kemp
- III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany
| | - H O Klages
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - M Kleifges
- Karlsruhe Institute of Technology, Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | | | - M Köpke
- Karlsruhe Institute of Technology, Institute for Experimental Particle Physics (ETP), Karlsruhe, Germany
| | - G Kukec Mezek
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - B L Lago
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Nova Friburgo, Brazil
| | - D LaHurd
- Case Western Reserve University, Cleveland, Ohio, USA
| | - R G Lang
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, São Paulo, Brazil
| | - N Langner
- III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany
| | | | - V Lenok
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - A Letessier-Selvon
- Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Sorbonne Université, Université de Paris, CNRS-IN2P3, Paris, France
| | - I Lhenry-Yvon
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
| | - D Lo Presti
- Dipartimento di Fisica e Astronomia, Università di Catania, Catania, Italy
- INFN, Sezione di Catania, Catania, Italy
| | - L Lopes
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - R López
- Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - R Lorek
- Case Western Reserve University, Cleveland, Ohio, USA
| | - Q Luce
- Karlsruhe Institute of Technology, Institute for Experimental Particle Physics (ETP), Karlsruhe, Germany
| | - A Lucero
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - J P Lundquist
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - A Machado Payeras
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
| | - G Mancarella
- INFN, Sezione di Lecce, Lecce, Italy
- Dipartimento di Matematica e Fisica "E. De Giorgi," Università del Salento, Lecce, Italy
| | - D Mandat
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - B C Manning
- University of Adelaide, Adelaide, South Australia, Australia
| | - J Manshanden
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
| | - P Mantsch
- Fermi National Accelerator Laboratory, Fermilab, Batavia, Illinois, USA
| | - S Marafico
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
| | - A G Mariazzi
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - I C Mariş
- Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - G Marsella
- INFN, Sezione di Lecce, Lecce, Italy
- Dipartimento di Matematica e Fisica "E. De Giorgi," Università del Salento, Lecce, Italy
| | - D Martello
- INFN, Sezione di Lecce, Lecce, Italy
- Dipartimento di Matematica e Fisica "E. De Giorgi," Università del Salento, Lecce, Italy
| | - H Martinez
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, São Paulo, Brazil
| | | | - M Mastrodicasa
- Dipartimento di Scienze Fisiche e Chimiche, Università dell'Aquila, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - H J Mathes
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - J Matthews
- Louisiana State University, Baton Rouge, Louisiana, USA
| | - G Matthiae
- Dipartimento di Fisica, Università di Roma "Tor Vergata," Roma, Italy
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
| | - E Mayotte
- Department of Physics, Bergische Universität Wuppertal, Wuppertal, Germany
| | - P O Mazur
- Fermi National Accelerator Laboratory, Fermilab, Batavia, Illinois, USA
| | - G Medina-Tanco
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
| | - D Melo
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - A Menshikov
- Karlsruhe Institute of Technology, Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - K-D Merenda
- Colorado School of Mines, Golden, Colorado, USA
| | - S Michal
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - M I Micheletti
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas Universidad Nacional de Rosario, Rosario, Argentina
| | - L Miramonti
- Dipartimento di Fisica, Università di Milano, Milano, Italy
- INFN, Sezione di Milano, Milano, Italy
| | - S Mollerach
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - F Montanet
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
| | - C Morello
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- INFN, Sezione di Torino, Torino, Italy
| | - M Mostafá
- Pennsylvania State University, University Park, Pennsylvania, USA
| | - A L Müller
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - M A Muller
- Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Universidade Estadual de Campinas, IFGW, Campinas, São Paulo, Brazil
| | - K Mulrey
- Vrije Universiteit Brussels, Brussels, Belgium
| | - R Mussa
- INFN, Sezione di Torino, Torino, Italy
| | - M Muzio
- New York University, New York, New York, USA
| | - W M Namasaka
- Department of Physics, Bergische Universität Wuppertal, Wuppertal, Germany
| | - L Nellen
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
| | - M Niculescu-Oglinzanu
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - M Niechciol
- Universität Siegen, Fachbereich 7 Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - D Nitz
- Michigan Technological University, Houghton, Michigan, USA
| | - D Nosek
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
| | - V Novotny
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
| | - L Nožka
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - A Nucita
- INFN, Sezione di Lecce, Lecce, Italy
- Dipartimento di Matematica e Fisica "E. De Giorgi," Università del Salento, Lecce, Italy
| | - L A Núñez
- Universidad Industrial de Santander, Bucaramanga, Colombia
| | - M Palatka
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - J Pallotta
- Centro de Investigaciones en Láseres y Aplicaciones, CITEDEF and CONICET, Villa Martelli, Argentina
| | - P Papenbreer
- Department of Physics, Bergische Universität Wuppertal, Wuppertal, Germany
| | - G Parente
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - A Parra
- Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - M Pech
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - F Pedreira
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - J Pȩkala
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - R Pelayo
- Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional (UPIITA-IPN), México, Distrito Federal, México
| | | | - J Perez Armand
- Instituto de Física, Universidade de São Paulo, São Paulo, Brazil
| | - M Perlin
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - L Perrone
- INFN, Sezione di Lecce, Lecce, Italy
- Dipartimento di Matematica e Fisica "E. De Giorgi," Università del Salento, Lecce, Italy
| | - S Petrera
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Gran Sasso Science Institute, L'Aquila, Italy
| | - T Pierog
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - M Pimenta
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - V Pirronello
- Dipartimento di Fisica e Astronomia, Università di Catania, Catania, Italy
- INFN, Sezione di Catania, Catania, Italy
| | - M Platino
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - B Pont
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - M Pothast
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - P Privitera
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
| | - M Prouza
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - A Puyleart
- Michigan Technological University, Houghton, Michigan, USA
| | - S Querchfeld
- Department of Physics, Bergische Universität Wuppertal, Wuppertal, Germany
| | - J Rautenberg
- Department of Physics, Bergische Universität Wuppertal, Wuppertal, Germany
| | - D Ravignani
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - M Reininghaus
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - J Ridky
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - F Riehn
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - M Risse
- Universität Siegen, Fachbereich 7 Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - P Ristori
- Centro de Investigaciones en Láseres y Aplicaciones, CITEDEF and CONICET, Villa Martelli, Argentina
| | - V Rizi
- Dipartimento di Scienze Fisiche e Chimiche, Università dell'Aquila, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | | | - J Rodriguez Rojo
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - M J Roncoroni
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - M Roth
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - E Roulet
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - A C Rovero
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
| | - P Ruehl
- Universität Siegen, Fachbereich 7 Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - S J Saffi
- University of Adelaide, Adelaide, South Australia, Australia
| | - A Saftoiu
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - F Salamida
- Dipartimento di Scienze Fisiche e Chimiche, Università dell'Aquila, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - H Salazar
- Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - G Salina
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
| | | | - F Sánchez
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - E M Santos
- Instituto de Física, Universidade de São Paulo, São Paulo, Brazil
| | - E Santos
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - F Sarazin
- Colorado School of Mines, Golden, Colorado, USA
| | - R Sarmento
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - C Sarmiento-Cano
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - R Sato
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - P Savina
- INFN, Sezione di Lecce, Lecce, Italy
- Dipartimento di Matematica e Fisica "E. De Giorgi," Università del Salento, Lecce, Italy
- CNRS/IN2P3, IJCLab, Université Paris-Saclay, Orsay, France
| | - C M Schäfer
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | | | - H Schieler
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - M Schimassek
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institute for Experimental Particle Physics (ETP), Karlsruhe, Germany
| | - M Schimp
- Department of Physics, Bergische Universität Wuppertal, Wuppertal, Germany
| | - F Schlüter
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - D Schmidt
- Karlsruhe Institute of Technology, Institute for Experimental Particle Physics (ETP), Karlsruhe, Germany
| | - O Scholten
- Vrije Universiteit Brussels, Brussels, Belgium
- KVI-Center for Advanced Radiation Technology, University of Groningen, Groningen, The Netherlands
| | - P Schovánek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - F G Schröder
- Department of Physics and Astronomy, Bartol Research Institute, University of Delaware, Newark, Delaware, USA
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - S Schröder
- Department of Physics, Bergische Universität Wuppertal, Wuppertal, Germany
| | - J Schulte
- III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany
| | - S J Sciutto
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - M Scornavacche
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - R C Shellard
- Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil
| | - G Sigl
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
| | - G Silli
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - O Sima
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - R Šmída
- University of Chicago, Enrico Fermi Institute, Chicago, Illinois, USA
| | - P Sommers
- Pennsylvania State University, University Park, Pennsylvania, USA
| | - J F Soriano
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA
| | - J Souchard
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
| | - R Squartini
- Observatorio Pierre Auger, Malargüe, Argentina
| | - M Stadelmaier
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - D Stanca
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - S Stanič
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - J Stasielak
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - P Stassi
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France
| | - A Streich
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institute for Experimental Particle Physics (ETP), Karlsruhe, Germany
| | - M Suárez-Durán
- Universidad Industrial de Santander, Bucaramanga, Colombia
| | - T Sudholz
- University of Adelaide, Adelaide, South Australia, Australia
| | - T Suomijärvi
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
| | - A D Supanitsky
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - J Šupík
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - Z Szadkowski
- Faculty of High-Energy Astrophysics, University of Łódź, Łódź, Poland
| | - A Taboada
- Karlsruhe Institute of Technology, Institute for Experimental Particle Physics (ETP), Karlsruhe, Germany
| | - A Tapia
- Universidad de Medellín, Medellín, Colombia
| | - C Timmermans
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - O Tkachenko
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - P Tobiska
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - C J Todero Peixoto
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, São Paulo, Brazil
| | - B Tomé
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - G Torralba Elipe
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - A Travaini
- Observatorio Pierre Auger, Malargüe, Argentina
| | - P Travnicek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - C Trimarelli
- Dipartimento di Scienze Fisiche e Chimiche, Università dell'Aquila, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - M Trini
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - M Tueros
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - R Ulrich
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - M Unger
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - L Vaclavek
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - M Vacula
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - J F Valdés Galicia
- Universidad Nacional Autónoma de México, México, Distrito Federal, México
| | - I Valiño
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Gran Sasso Science Institute, L'Aquila, Italy
| | - L Valore
- INFN, Sezione di Napoli, Napoli, Italy
- Dipartimento di Fisica "Ettore Pancini," Università di Napoli "Federico II," Napoli, Italy
| | - E Varela
- Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - V Varma K C
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | | | - D Veberič
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - C Ventura
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, Brazil
| | | | - V Verzi
- INFN, Sezione di Roma "Tor Vergata," Roma, Italy
| | - J Vicha
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - J Vink
- Faculty of Science, Universiteit van Amsterdam, Amsterdam, The Netherlands
| | - S Vorobiov
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - H Wahlberg
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - A A Watson
- School of Physics and Astronomy, University of Leeds, Leeds, United Kingdom
| | - M Weber
- Karlsruhe Institute of Technology, Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - A Weindl
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - L Wiencke
- Colorado School of Mines, Golden, Colorado, USA
| | - H Wilczyński
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - T Winchen
- Vrije Universiteit Brussels, Brussels, Belgium
| | - M Wirtz
- III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany
| | - D Wittkowski
- Department of Physics, Bergische Universität Wuppertal, Wuppertal, Germany
| | - B Wundheiler
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - A Yushkov
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - O Zapparrata
- Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - E Zas
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - D Zavrtanik
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - M Zavrtanik
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - L Zehrer
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - A Zepeda
- Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV), México, Distrito Federal, México
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10
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Consolati G, Mossini E, Nichetti D, Quasso F, Viola GM, Yaynik E. Shape and Temperature Expansion of Free Volume Holes in Some Cured Polybutadiene-Polyisoprene Rubber Blends. Int J Mol Sci 2021; 22:ijms22031436. [PMID: 33535426 PMCID: PMC7867040 DOI: 10.3390/ijms22031436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/28/2021] [Accepted: 01/28/2021] [Indexed: 01/03/2023] Open
Abstract
The free volume fraction of a macromolecular structure can be assessed theoretically by using a suitable model; however, it can also be evaluated from experimental data obtained from dilatometry and positron annihilation lifetime spectra. In this second case, a regular geometry of the sub-nanometric cavities forming the free volume has to be assumed, although in fact they are irregularly shaped. The most popular approach is to guess spherical holes, which implies an isotropic growth of these last with temperature. In this work, we compared the free volume fraction, as obtained from experiments in a set of polybutadiene and polyisoprene cured rubbers and their blends, with the analogous quantity expected by using the lattice-hole model. The results allowed us to obtain insights on the approximate shape of the holes. Indeed, a cylindrical flattened geometry of the cavities produced a better agreement with the theory than the spherical shape. Furthermore, the best fit was obtained for holes that expanded preferentially in the radial direction, with a consequent decrease of the aspect ratio with temperature.
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Affiliation(s)
- Giovanni Consolati
- Department of Aerospace Science and Technology, Politecnico di Milano, Via LaMasa, 34, 20156 Milano, Italy; (F.Q.); (G.M.V.); (E.Y.)
- INFN, Sezione di Milano, Via Celoria, 16, 20133 Milano, Italy
- Correspondence:
| | - Eros Mossini
- Department of Energy, Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133 Milano, Italy;
| | | | - Fiorenza Quasso
- Department of Aerospace Science and Technology, Politecnico di Milano, Via LaMasa, 34, 20156 Milano, Italy; (F.Q.); (G.M.V.); (E.Y.)
| | - Giuseppe Maria Viola
- Department of Aerospace Science and Technology, Politecnico di Milano, Via LaMasa, 34, 20156 Milano, Italy; (F.Q.); (G.M.V.); (E.Y.)
| | - Erkin Yaynik
- Department of Aerospace Science and Technology, Politecnico di Milano, Via LaMasa, 34, 20156 Milano, Italy; (F.Q.); (G.M.V.); (E.Y.)
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11
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Aab A, Abreu P, Aglietta M, Albury JM, Allekotte I, Almela A, Alvarez Castillo J, Alvarez-Muñiz J, Alves Batista R, Anastasi GA, Anchordoqui L, Andrada B, Andringa S, Aramo C, Araújo Ferreira PR, Asorey H, Assis P, Avila G, Badescu AM, Bakalova A, Balaceanu A, Barbato F, Barreira Luz RJ, Becker KH, Bellido JA, Berat C, Bertaina ME, Bertou X, Biermann PL, Bister T, Biteau J, Blanco A, Blazek J, Bleve C, Boháčová M, Boncioli D, Bonifazi C, Bonneau Arbeletche L, Borodai N, Botti AM, Brack J, Bretz T, Briechle FL, Buchholz P, Bueno A, Buitink S, Buscemi M, Caballero-Mora KS, Caccianiga L, Calcagni L, Cancio A, Canfora F, Caracas I, Carceller JM, Caruso R, Castellina A, Catalani F, Cataldi G, Cazon L, Cerda M, Chinellato JA, Choi K, Chudoba J, Chytka L, Clay RW, Cobos Cerutti AC, Colalillo R, Coleman A, Coluccia MR, Conceição R, Condorelli A, Consolati G, Contreras F, Convenga F, Covault CE, Dasso S, Daumiller K, Dawson BR, Day JA, de Almeida RM, de Jesús J, de Jong SJ, De Mauro G, de Mello Neto JRT, De Mitri I, de Oliveira J, de Oliveira Franco D, de Souza V, De Vito E, Debatin J, Del Río M, Deligny O, Dembinski H, Dhital N, Di Giulio C, Di Matteo A, Díaz Castro ML, Dobrigkeit C, D'Olivo JC, Dorosti Q, Dos Anjos RC, Dova MT, Ebr J, Engel R, Epicoco I, Erdmann M, Escobar CO, Etchegoyen A, Falcke H, Farmer J, Farrar G, Fauth AC, Fazzini N, Feldbusch F, Fenu F, Fick B, Figueira JM, Filipčič A, Fodran T, Freire MM, Fujii T, Fuster A, Galea C, Galelli C, García B, Garcia Vegas AL, Gemmeke H, Gesualdi F, Gherghel-Lascu A, Ghia PL, Giaccari U, Giammarchi M, Giller M, Glombitza J, Gobbi F, Gollan F, Golup G, Gómez Berisso M, Gómez Vitale PF, Gongora JP, González N, Goos I, Góra D, Gorgi A, Gottowik M, Grubb TD, Guarino F, Guedes GP, Guido E, Hahn S, Halliday R, Hampel MR, Hansen P, Harari D, Harvey VM, Haungs A, Hebbeker T, Heck D, Hill GC, Hojvat C, Hörandel JR, Horvath P, Hrabovský M, Huege T, Hulsman J, Insolia A, Isar PG, Johnsen JA, Jurysek J, Kääpä A, Kampert KH, Keilhauer B, Kemp J, Klages HO, Kleifges M, Kleinfeller J, Köpke M, Kukec Mezek G, Lago BL, LaHurd D, Lang RG, Leigui de Oliveira MA, Lenok V, Letessier-Selvon A, Lhenry-Yvon I, Lo Presti D, Lopes L, López R, Lorek R, Luce Q, Lucero A, Machado Payeras A, Malacari M, Mancarella G, Mandat D, Manning BC, Manshanden J, Mantsch P, Marafico S, Mariazzi AG, Mariş IC, Marsella G, Martello D, Martinez H, Martínez Bravo O, Mastrodicasa M, Mathes HJ, Matthews J, Matthiae G, Mayotte E, Mazur PO, Medina-Tanco G, Melo D, Menshikov A, Merenda KD, Michal S, Micheletti MI, Miramonti L, Mockler D, Mollerach S, Montanet F, Morello C, Mostafá M, Müller AL, Muller MA, Mulrey K, Mussa R, Muzio M, Namasaka WM, Nellen L, Nguyen PH, Niculescu-Oglinzanu M, Niechciol M, Nitz D, Nosek D, Novotny V, Nožka L, Nucita A, Núñez LA, Palatka M, Pallotta J, Panetta MP, Papenbreer P, Parente G, Parra A, Pech M, Pedreira F, Pȩkala J, Pelayo R, Peña-Rodriguez J, Perez Armand J, Perlin M, Perrone L, Peters C, Petrera S, Pierog T, Pimenta M, Pirronello V, Platino M, Pont B, Pothast M, Privitera P, Prouza M, Puyleart A, Querchfeld S, Rautenberg J, Ravignani D, Reininghaus M, Ridky J, Riehn F, Risse M, Ristori P, Rizi V, Rodrigues de Carvalho W, Rodriguez Fernandez G, Rodriguez Rojo J, Roncoroni MJ, Roth M, Roulet E, Rovero AC, Ruehl P, Saffi SJ, Saftoiu A, Salamida F, Salazar H, Salina G, Sanabria Gomez JD, Sánchez F, Santos EM, Santos E, Sarazin F, Sarmento R, Sarmiento-Cano C, Sato R, Savina P, Schäfer C, Scherini V, Schieler H, Schimassek M, Schimp M, Schlüter F, Schmidt D, Scholten O, Schovánek P, Schröder FG, Schröder S, Schulz A, Sciutto SJ, Scornavacche M, Shellard RC, Sigl G, Silli G, Sima O, Šmída R, Sommers P, Soriano JF, Souchard J, Squartini R, Stadelmaier M, Stanca D, Stanič S, Stasielak J, Stassi P, Streich A, Suárez-Durán M, Sudholz T, Suomijärvi T, Supanitsky AD, Šupík J, Szadkowski Z, Taboada A, Tapia A, Timmermans C, Tkachenko O, Tobiska P, Todero Peixoto CJ, Tomé B, Torralba Elipe G, Travaini A, Travnicek P, Trimarelli C, Trini M, Tueros M, Ulrich R, Unger M, Urban M, Vaclavek L, Vacula M, Valdés Galicia JF, Valiño I, Valore L, van Vliet A, Varela E, Vargas Cárdenas B, Vásquez-Ramírez A, Veberič D, Ventura C, Vergara Quispe ID, Verzi V, Vicha J, Villaseñor L, Vink J, Vorobiov S, Wahlberg H, Watson AA, Weber M, Weindl A, Wiencke L, Wilczyński H, Winchen T, Wirtz M, Wittkowski D, Wundheiler B, Yushkov A, Zapparrata O, Zas E, Zavrtanik D, Zavrtanik M, Zehrer L, Zepeda A, Ziolkowski M, Zuccarello F. Features of the Energy Spectrum of Cosmic Rays above 2.5×10^{18} eV Using the Pierre Auger Observatory. Phys Rev Lett 2020; 125:121106. [PMID: 33016715 DOI: 10.1103/physrevlett.125.121106] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 07/31/2020] [Indexed: 06/11/2023]
Abstract
We report a measurement of the energy spectrum of cosmic rays above 2.5×10^{18} eV based on 215 030 events. New results are presented: at about 1.3×10^{19} eV, the spectral index changes from 2.51±0.03(stat)±0.05(syst) to 3.05±0.05(stat)±0.10(syst), evolving to 5.1±0.3(stat)±0.1(syst) beyond 5×10^{19} eV, while no significant dependence of spectral features on the declination is seen in the accessible range. These features of the spectrum can be reproduced in models with energy-dependent mass composition. The energy density in cosmic rays above 5×10^{18} eV is [5.66±0.03(stat)±1.40(syst)]×10^{53} erg Mpc^{-3}.
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Affiliation(s)
- A Aab
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - P Abreu
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - M Aglietta
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- INFN, Sezione di Torino, Torino, Italy
| | - J M Albury
- University of Adelaide, Adelaide, S.A., Australia
| | - I Allekotte
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - A Almela
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
| | | | - J Alvarez-Muñiz
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - R Alves Batista
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - G A Anastasi
- INFN, Sezione di Torino, Torino, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
| | - L Anchordoqui
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, NY, USA
| | - B Andrada
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - S Andringa
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - C Aramo
- INFN, Sezione di Napoli, Napoli, Italy
| | | | - H Asorey
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - P Assis
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - G Avila
- Observatorio Pierre Auger, Malargüe, Argentina
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - A M Badescu
- University Politehnica of Bucharest, Bucharest, Romania
| | - A Bakalova
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - A Balaceanu
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - F Barbato
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Napoli "Federico II", Dipartimento di Fisica "Ettore Pancini", Napoli, Italy
| | - R J Barreira Luz
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - K H Becker
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - J A Bellido
- University of Adelaide, Adelaide, S.A., Australia
| | - C Berat
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France, France
| | - M E Bertaina
- INFN, Sezione di Torino, Torino, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
| | - X Bertou
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - P L Biermann
- Max-Planck-Institut für Radioastronomie, Bonn, Germany
| | - T Bister
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - J Biteau
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France, France
| | - A Blanco
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - J Blazek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - C Bleve
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France, France
| | - M Boháčová
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - D Boncioli
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - C Bonifazi
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, RJ, Brazil
| | | | - N Borodai
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - A M Botti
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - J Brack
- Colorado State University, Fort Collins, CO, USA
| | - T Bretz
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - F L Briechle
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - P Buchholz
- Universität Siegen, Fachbereich 7 Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - A Bueno
- Universidad de Granada and C.A.F.P.E., Granada, Spain
| | - S Buitink
- Vrije Universiteit Brussels, Brussels, Belgium
| | - M Buscemi
- Università di Catania, Dipartimento di Fisica e Astronomia, Catania, Italy
- INFN, Sezione di Catania, Catania, Italy
| | | | - L Caccianiga
- Università di Milano, Dipartimento di Fisica, Milano, Italy
- INFN, Sezione di Milano, Milano, Italy
| | - L Calcagni
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - A Cancio
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
| | - F Canfora
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - I Caracas
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - J M Carceller
- Universidad de Granada and C.A.F.P.E., Granada, Spain
| | - R Caruso
- Università di Catania, Dipartimento di Fisica e Astronomia, Catania, Italy
- INFN, Sezione di Catania, Catania, Italy
| | - A Castellina
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- INFN, Sezione di Torino, Torino, Italy
| | - F Catalani
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, SP, Brazil
| | - G Cataldi
- INFN, Sezione di Lecce, Lecce, Italy
| | - L Cazon
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - M Cerda
- Observatorio Pierre Auger, Malargüe, Argentina
| | - J A Chinellato
- Universidade Estadual de Campinas, IFGW, Campinas, SP, Brazil
| | - K Choi
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - J Chudoba
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - L Chytka
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - R W Clay
- University of Adelaide, Adelaide, S.A., Australia
| | - A C Cobos Cerutti
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
| | - R Colalillo
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Napoli "Federico II", Dipartimento di Fisica "Ettore Pancini", Napoli, Italy
| | - A Coleman
- University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, DE, USA
| | - M R Coluccia
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi", Lecce, Italy
| | - R Conceição
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - A Condorelli
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Gran Sasso Science Institute, L'Aquila, Italy
| | - G Consolati
- INFN, Sezione di Milano, Milano, Italy
- Politecnico di Milano, Dipartimento di Scienze e Tecnologie Aerospaziali, Milano, Italy
| | - F Contreras
- Observatorio Pierre Auger, Malargüe, Argentina
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - F Convenga
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi", Lecce, Italy
| | - C E Covault
- Case Western Reserve University, Cleveland, OH, USA
- also at Radboud Universtiy Nijmegen, Nijmegen, The Netherlands
| | - S Dasso
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
- Departamento de Física and Departamento de Ciencias de la Atmósfera y los Océanos, FCEyN, Universidad de Buenos Aires and CONICET, Buenos Aires, Argentina
| | - K Daumiller
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - B R Dawson
- University of Adelaide, Adelaide, S.A., Australia
| | - J A Day
- University of Adelaide, Adelaide, S.A., Australia
| | - R M de Almeida
- Universidade Federal Fluminense, EEIMVR, Volta Redonda, RJ, Brazil
| | - J de Jesús
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - S J de Jong
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - G De Mauro
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - J R T de Mello Neto
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, RJ, Brazil
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, RJ, Brazil
| | - I De Mitri
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Gran Sasso Science Institute, L'Aquila, Italy
| | - J de Oliveira
- Universidade Federal Fluminense, EEIMVR, Volta Redonda, RJ, Brazil
| | | | - V de Souza
- Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, SP, Brazil
| | - E De Vito
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi", Lecce, Italy
| | - J Debatin
- Karlsruhe Institute of Technology, Institute for Experimental Particle Physics (ETP), Karlsruhe, Germany
| | - M Del Río
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - O Deligny
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France, France
| | - H Dembinski
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - N Dhital
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - C Di Giulio
- Università di Roma "Tor Vergata", Dipartimento di Fisica, Roma, Italy
- INFN, Sezione di Roma "Tor Vergata", Roma, Italy
| | | | - M L Díaz Castro
- Universidade Estadual de Campinas, IFGW, Campinas, SP, Brazil
| | - C Dobrigkeit
- Universidade Estadual de Campinas, IFGW, Campinas, SP, Brazil
| | - J C D'Olivo
- Universidad Nacional Autónoma de México, México, D.F., México
| | - Q Dorosti
- Universität Siegen, Fachbereich 7 Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - R C Dos Anjos
- Universidade Federal do Paraná, Setor Palotina, Palotina, Brazil
| | - M T Dova
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - J Ebr
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - R Engel
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
- Karlsruhe Institute of Technology, Institute for Experimental Particle Physics (ETP), Karlsruhe, Germany
| | - I Epicoco
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi", Lecce, Italy
| | - M Erdmann
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | | | - A Etchegoyen
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
| | - H Falcke
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
- Stichting Astronomisch Onderzoek in Nederland (ASTRON), Dwingeloo, The Netherlands
| | - J Farmer
- University of Chicago, Enrico Fermi Institute, Chicago, IL, USA
| | - G Farrar
- New York University, New York, NY, USA
| | - A C Fauth
- Universidade Estadual de Campinas, IFGW, Campinas, SP, Brazil
| | - N Fazzini
- Fermi National Accelerator Laboratory, USA
| | - F Feldbusch
- Karlsruhe Institute of Technology, Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - F Fenu
- INFN, Sezione di Torino, Torino, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
| | - B Fick
- Michigan Technological University, Houghton, MI, USA
| | - J M Figueira
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - A Filipčič
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - T Fodran
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - M M Freire
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
| | - T Fujii
- University of Chicago, Enrico Fermi Institute, Chicago, IL, USA
- now at Hakubi Center for Advanced Research and Graduate School of Science, Kyoto University, Kyoto, Japan
| | - A Fuster
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina
| | - C Galea
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - C Galelli
- Università di Milano, Dipartimento di Fisica, Milano, Italy
- INFN, Sezione di Milano, Milano, Italy
| | - B García
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina
| | - A L Garcia Vegas
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - H Gemmeke
- Karlsruhe Institute of Technology, Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - F Gesualdi
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - A Gherghel-Lascu
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - P L Ghia
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France, France
| | - U Giaccari
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | | | - M Giller
- University of Łódź, Faculty of Astrophysics, Łódź, Poland
| | - J Glombitza
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - F Gobbi
- Observatorio Pierre Auger, Malargüe, Argentina
| | - F Gollan
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - G Golup
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - M Gómez Berisso
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - P F Gómez Vitale
- Observatorio Pierre Auger, Malargüe, Argentina
- Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
| | - J P Gongora
- Observatorio Pierre Auger, Malargüe, Argentina
| | - N González
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - I Goos
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - D Góra
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - A Gorgi
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- INFN, Sezione di Torino, Torino, Italy
| | - M Gottowik
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - T D Grubb
- University of Adelaide, Adelaide, S.A., Australia
| | - F Guarino
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Napoli "Federico II", Dipartimento di Fisica "Ettore Pancini", Napoli, Italy
| | - G P Guedes
- Universidade Estadual de Feira de Santana, Feira de Santana, Brazil
| | - E Guido
- INFN, Sezione di Torino, Torino, Italy
- Università Torino, Dipartimento di Fisica, Torino, Italy
| | - S Hahn
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - R Halliday
- Case Western Reserve University, Cleveland, OH, USA
| | - M R Hampel
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - P Hansen
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - D Harari
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - V M Harvey
- University of Adelaide, Adelaide, S.A., Australia
| | - A Haungs
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - T Hebbeker
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - D Heck
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - G C Hill
- University of Adelaide, Adelaide, S.A., Australia
| | - C Hojvat
- Fermi National Accelerator Laboratory, USA
| | - J R Hörandel
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - P Horvath
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - M Hrabovský
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - T Huege
- Vrije Universiteit Brussels, Brussels, Belgium
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - J Hulsman
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - A Insolia
- Università di Catania, Dipartimento di Fisica e Astronomia, Catania, Italy
- INFN, Sezione di Catania, Catania, Italy
| | - P G Isar
- Institute of Space Science, Bucharest-Magurele, Romania
| | | | - J Jurysek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - A Kääpä
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - K H Kampert
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - B Keilhauer
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - J Kemp
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - H O Klages
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - M Kleifges
- Karlsruhe Institute of Technology, Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | | | - M Köpke
- Karlsruhe Institute of Technology, Institute for Experimental Particle Physics (ETP), Karlsruhe, Germany
| | - G Kukec Mezek
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - B L Lago
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Nova Friburgo, Brazil
| | - D LaHurd
- Case Western Reserve University, Cleveland, OH, USA
| | - R G Lang
- Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, SP, Brazil
| | | | - V Lenok
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - A Letessier-Selvon
- Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Universités Paris 6 et Paris 7, CNRS-IN2P3, Paris, France
| | - I Lhenry-Yvon
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France, France
| | - D Lo Presti
- Università di Catania, Dipartimento di Fisica e Astronomia, Catania, Italy
- INFN, Sezione di Catania, Catania, Italy
| | - L Lopes
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - R López
- Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - R Lorek
- Case Western Reserve University, Cleveland, OH, USA
| | - Q Luce
- Karlsruhe Institute of Technology, Institute for Experimental Particle Physics (ETP), Karlsruhe, Germany
| | - A Lucero
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | | | - M Malacari
- University of Chicago, Enrico Fermi Institute, Chicago, IL, USA
| | - G Mancarella
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi", Lecce, Italy
| | - D Mandat
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - B C Manning
- University of Adelaide, Adelaide, S.A., Australia
| | - J Manshanden
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
| | - P Mantsch
- Fermi National Accelerator Laboratory, USA
| | - S Marafico
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France, France
| | - A G Mariazzi
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - I C Mariş
- Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - G Marsella
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi", Lecce, Italy
| | - D Martello
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi", Lecce, Italy
| | - H Martinez
- Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, SP, Brazil
| | | | - M Mastrodicasa
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - H J Mathes
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - J Matthews
- Louisiana State University, Baton Rouge, LA, USA
| | - G Matthiae
- Università di Roma "Tor Vergata", Dipartimento di Fisica, Roma, Italy
- INFN, Sezione di Roma "Tor Vergata", Roma, Italy
| | - E Mayotte
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - P O Mazur
- Fermi National Accelerator Laboratory, USA
| | - G Medina-Tanco
- Universidad Nacional Autónoma de México, México, D.F., México
| | - D Melo
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - A Menshikov
- Karlsruhe Institute of Technology, Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | | | - S Michal
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - M I Micheletti
- Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
| | - L Miramonti
- Università di Milano, Dipartimento di Fisica, Milano, Italy
- INFN, Sezione di Milano, Milano, Italy
| | - D Mockler
- Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - S Mollerach
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - F Montanet
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France, France
| | - C Morello
- Osservatorio Astrofisico di Torino (INAF), Torino, Italy
- INFN, Sezione di Torino, Torino, Italy
| | - M Mostafá
- Pennsylvania State University, University Park, PA, USA
| | - A L Müller
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - M A Muller
- Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, RJ, Brazil
- Universidade Estadual de Campinas, IFGW, Campinas, SP, Brazil
- Universidade Federal de Alfenas, Poços de Caldas, Brazil
| | - K Mulrey
- Vrije Universiteit Brussels, Brussels, Belgium
| | - R Mussa
- INFN, Sezione di Torino, Torino, Italy
| | - M Muzio
- New York University, New York, NY, USA
| | - W M Namasaka
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - L Nellen
- Universidad Nacional Autónoma de México, México, D.F., México
| | - P H Nguyen
- University of Adelaide, Adelaide, S.A., Australia
| | - M Niculescu-Oglinzanu
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - M Niechciol
- Universität Siegen, Fachbereich 7 Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - D Nitz
- Michigan Technological University, Houghton, MI, USA
- Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - D Nosek
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
| | - V Novotny
- Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
| | - L Nožka
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - A Nucita
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi", Lecce, Italy
| | - L A Núñez
- Universidad Industrial de Santander, Bucaramanga, Colombia
| | - M Palatka
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - J Pallotta
- Centro de Investigaciones en Láseres y Aplicaciones, CITEDEF and CONICET, Villa Martelli, Argentina
| | - M P Panetta
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi", Lecce, Italy
| | - P Papenbreer
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - G Parente
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - A Parra
- Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - M Pech
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - F Pedreira
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - J Pȩkala
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - R Pelayo
- Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional (UPIITA-IPN), México, D.F., México
| | | | - J Perez Armand
- Universidade de São Paulo, Instituto de Física, São Paulo, SP, Brazil
| | - M Perlin
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - L Perrone
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi", Lecce, Italy
| | - C Peters
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - S Petrera
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Gran Sasso Science Institute, L'Aquila, Italy
| | - T Pierog
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - M Pimenta
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - V Pirronello
- Università di Catania, Dipartimento di Fisica e Astronomia, Catania, Italy
- INFN, Sezione di Catania, Catania, Italy
| | - M Platino
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - B Pont
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - M Pothast
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - P Privitera
- University of Chicago, Enrico Fermi Institute, Chicago, IL, USA
| | - M Prouza
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - A Puyleart
- Michigan Technological University, Houghton, MI, USA
| | - S Querchfeld
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - J Rautenberg
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - D Ravignani
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - M Reininghaus
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - J Ridky
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - F Riehn
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - M Risse
- Universität Siegen, Fachbereich 7 Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - P Ristori
- Centro de Investigaciones en Láseres y Aplicaciones, CITEDEF and CONICET, Villa Martelli, Argentina
| | - V Rizi
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | | | - G Rodriguez Fernandez
- Università di Roma "Tor Vergata", Dipartimento di Fisica, Roma, Italy
- INFN, Sezione di Roma "Tor Vergata", Roma, Italy
| | | | - M J Roncoroni
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - M Roth
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - E Roulet
- Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
| | - A C Rovero
- Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina
| | - P Ruehl
- Universität Siegen, Fachbereich 7 Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - S J Saffi
- University of Adelaide, Adelaide, S.A., Australia
| | - A Saftoiu
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - F Salamida
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - H Salazar
- Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - G Salina
- INFN, Sezione di Roma "Tor Vergata", Roma, Italy
| | | | - F Sánchez
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - E M Santos
- Universidade de São Paulo, Instituto de Física, São Paulo, SP, Brazil
| | - E Santos
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - F Sarazin
- Colorado School of Mines, Golden, CO, USA
| | - R Sarmento
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - C Sarmiento-Cano
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - R Sato
- Observatorio Pierre Auger, Malargüe, Argentina
| | - P Savina
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France, France
- INFN, Sezione di Lecce, Lecce, Italy
- Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi", Lecce, Italy
| | - C Schäfer
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | | | - H Schieler
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - M Schimassek
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institute for Experimental Particle Physics (ETP), Karlsruhe, Germany
| | - M Schimp
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - F Schlüter
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - D Schmidt
- Karlsruhe Institute of Technology, Institute for Experimental Particle Physics (ETP), Karlsruhe, Germany
| | - O Scholten
- Vrije Universiteit Brussels, Brussels, Belgium
- KVI-Center for Advanced Radiation Technology, University of Groningen, Groningen, The Netherlands
| | - P Schovánek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - F G Schröder
- University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, DE, USA
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - S Schröder
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - A Schulz
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - S J Sciutto
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - M Scornavacche
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - R C Shellard
- Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, RJ, Brazil
| | - G Sigl
- Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany
| | - G Silli
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - O Sima
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
- also at Radboud Universtiy Nijmegen, Nijmegen, The Netherlands
| | - R Šmída
- University of Chicago, Enrico Fermi Institute, Chicago, IL, USA
| | - P Sommers
- Pennsylvania State University, University Park, PA, USA
| | - J F Soriano
- Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, NY, USA
| | - J Souchard
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France, France
| | - R Squartini
- Observatorio Pierre Auger, Malargüe, Argentina
| | - M Stadelmaier
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - D Stanca
- "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania
| | - S Stanič
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - J Stasielak
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - P Stassi
- Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France, France
| | - A Streich
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
- Karlsruhe Institute of Technology, Institute for Experimental Particle Physics (ETP), Karlsruhe, Germany
| | - M Suárez-Durán
- Universidad Industrial de Santander, Bucaramanga, Colombia
| | - T Sudholz
- University of Adelaide, Adelaide, S.A., Australia
| | - T Suomijärvi
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France, France
| | - A D Supanitsky
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - J Šupík
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - Z Szadkowski
- University of Łódź, Faculty of High-Energy Astrophysics,Łódź, Poland
| | - A Taboada
- Karlsruhe Institute of Technology, Institute for Experimental Particle Physics (ETP), Karlsruhe, Germany
| | - A Tapia
- Universidad de Medellín, Medellín, Colombia
| | - C Timmermans
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
- Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Science Park, Amsterdam, The Netherlands
| | - O Tkachenko
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - P Tobiska
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - C J Todero Peixoto
- Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, SP, Brazil
| | - B Tomé
- Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal
| | - G Torralba Elipe
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - A Travaini
- Observatorio Pierre Auger, Malargüe, Argentina
| | - P Travnicek
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - C Trimarelli
- Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
| | - M Trini
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - M Tueros
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - R Ulrich
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - M Unger
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - M Urban
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - L Vaclavek
- Palacky University, RCPTM, Olomouc, Czech Republic
| | - M Vacula
- Palacky University, RCPTM, Olomouc, Czech Republic
| | | | - I Valiño
- INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy
- Gran Sasso Science Institute, L'Aquila, Italy
| | - L Valore
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Napoli "Federico II", Dipartimento di Fisica "Ettore Pancini", Napoli, Italy
| | - A van Vliet
- IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - E Varela
- Benemérita Universidad Autónoma de Puebla, Puebla, México
| | | | | | - D Veberič
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - C Ventura
- Universidade Federal do Rio de Janeiro (UFRJ), Observatório do Valongo, Rio de Janeiro, RJ, Brazil
| | | | - V Verzi
- INFN, Sezione di Roma "Tor Vergata", Roma, Italy
| | - J Vicha
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - L Villaseñor
- Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - J Vink
- Universiteit van Amsterdam, Faculty of Science, Amsterdam, The Netherlands
| | - S Vorobiov
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - H Wahlberg
- IFLP, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
| | - A A Watson
- School of Physics and Astronomy, University of Leeds, Leeds, United Kingdom
| | - M Weber
- Karlsruhe Institute of Technology, Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
| | - A Weindl
- Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
| | - L Wiencke
- Colorado School of Mines, Golden, CO, USA
| | - H Wilczyński
- Institute of Nuclear Physics PAN, Krakow, Poland
| | - T Winchen
- Vrije Universiteit Brussels, Brussels, Belgium
| | - M Wirtz
- RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
| | - D Wittkowski
- Bergische Universität Wuppertal, Department of Physics, Wuppertal, Germany
| | - B Wundheiler
- Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
| | - A Yushkov
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - O Zapparrata
- Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - E Zas
- Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - D Zavrtanik
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - M Zavrtanik
- Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - L Zehrer
- Center for Astrophysics and Cosmology (CAC), University of Nova Gorica, Nova Gorica, Slovenia
| | - A Zepeda
- Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV), México, D.F., México
| | - M Ziolkowski
- Universität Siegen, Fachbereich 7 Physik-Experimentelle Teilchenphysik, Siegen, Germany
| | - F Zuccarello
- Università di Catania, Dipartimento di Fisica e Astronomia, Catania, Italy
- INFN, Sezione di Catania, Catania, Italy
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Tanzi Marlotti G, Consolati G, Castelli F. Formal calculation of exchange correlation effects on annihilation lifetimes of positronium confined in small cavities. J Phys Condens Matter 2020; 32:025602. [PMID: 31550695 DOI: 10.1088/1361-648x/ab477e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Positronium atoms (Ps) are widely used as a probe to characterize voids or vacancies in non-metallic materials. The annihilation lifetime of trapped Ps is strongly modified by pickoff, depending on the cavity size and on the appropriate external electron density. The connection between these material characteristics and Ps annihilation lifetimes is usually based on models that do not consider the requirements of full electron indistinguishability, that must be taken into account for a correct description of pickoff annihilation processes. In this report, we provide a formal theoretical framework in which exchange correlation effects between confined Ps and surrounding electrons are introduced in a natural way, giving a clear and versatile picture of the various contributions to pickoff annihilation. Moreover, our results provide a simple explanation of the lowering of the contact density (the Ps-electron density at the positron position) as a direct consequence of the electrons indistinguishability, at variance with previous interpretation based on spatial deformations of Ps wavefunction. Calculations are performed within the 'symmetry adapted perturbation theory' approach, and the results are compared with available experimental data on Ps lifetimes for polymers and molecular solids. Finally, our analysis gives a formal justification to the approximations involved in early models based on the well known Tao-Eldrup approach, and gives a simple interpretation of Ps properties in subnanometric voids.
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Affiliation(s)
- G Tanzi Marlotti
- Department of Physics 'Aldo Pontremoli', Università degli Studi di Milano, via Celoria 16 I-20133 Milano, Italy
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Aab A, Abreu P, Aglietta M, Albuquerque I, Albury J, Allekotte I, Almela A, Alvarez Castillo J, Alvarez-Muñiz J, Anastasi G, Anchordoqui L, Andrada B, Andringa S, Aramo C, Asorey H, Assis P, Avila G, Badescu A, Bakalova A, Balaceanu A, Barbato F, Barreira Luz R, Baur S, Becker K, Bellido J, Berat C, Bertaina M, Bertou X, Biermann P, Biteau J, Blaess S, Blanco A, Blazek J, Bleve C, Boháčová M, Boncioli D, Bonifazi C, Borodai N, Botti A, Brack J, Bretz T, Bridgeman A, Briechle F, Buchholz P, Bueno A, Buitink S, Buscemi M, Caballero-Mora K, Caccianiga L, Calcagni L, Cancio A, Canfora F, Carceller J, Caruso R, Castellina A, Catalani F, Cataldi G, Cazon L, Cerda M, Chinellato J, Chudoba J, Chytka L, Clay R, Cobos Cerutti A, Colalillo R, Coleman A, Coluccia M, Conceição R, Condorelli A, Consolati G, Contreras F, Convenga F, Cooper M, Coutu S, Covault C, Daniel B, Dasso S, Daumiller K, Dawson B, Day J, de Almeida R, de Jong S, De Mauro G, de Mello Neto J, De Mitri I, de Oliveira J, de Oliveira Salles F, de Souza V, Debatin J, del Río M, Deligny O, Dhital N, Díaz Castro M, Diogo F, Dobrigkeit C, D’Olivo J, Dorosti Q, dos Anjos R, Dova M, Dundovic A, Ebr J, Engel R, Erdmann M, Escobar C, Etchegoyen A, Falcke H, Farmer J, Farrar G, Fauth A, Fazzini N, Feldbusch F, Fenu F, Ferreyro L, Figueira J, Filipčič A, Freire M, Fujii T, Fuster A, García B, Gemmeke H, Gherghel-Lascu A, Ghia P, Giaccari U, Giammarchi M, Giller M, Głas D, Glombitza J, Gobbi F, Golup G, Gómez Berisso M, Gómez Vitale P, Gongora J, González N, Goos I, Góra D, Gorgi A, Gottowik M, Grubb T, Guarino F, Guedes G, Guido E, Halliday R, Hampel M, Hansen P, Harari D, Harrison T, Harvey V, Haungs A, Hebbeker T, Heck D, Heimann P, Hill G, Hojvat C, Holt E, Homola P, Hörandel J, Horvath P, Hrabovský M, Huege T, Hulsman J, Insolia A, Isar P, Jandt I, Johnsen J, Josebachuili M, Jurysek J, Kääpä A, Kampert K, Keilhauer B, Kemmerich N, Kemp J, Klages H, Kleifges M, Kleinfeller J, Krause R, Kuempel D, Kukec Mezek G, Kuotb Awad A, Lago B, LaHurd D, Lang R, Legumina R, Leigui de Oliveira M, Lenok V, Letessier-Selvon A, Lhenry-Yvon I, Lippmann O, Lo Presti D, Lopes L, López R, López Casado A, Lorek R, Luce Q, Lucero A, Malacari M, Mancarella G, Mandat D, Manning B, Mantsch P, Mariazzi A, Mariş I, Marsella G, Martello D, Martinez H, Martínez Bravo O, Mastrodicasa M, Mathes H, Mathys S, Matthews J, Matthiae G, Mayotte E, Mazur P, Medina-Tanco G, Melo D, Menshikov A, Merenda KD, Michal S, Micheletti M, Middendorf L, Miramonti L, Mitrica B, Mockler D, Mollerach S, Montanet F, Morello C, Morlino G, Mostafá M, Müller A, Muller M, Müller S, Mussa R, Nellen L, Nguyen P, Niculescu-Oglinzanu M, Niechciol M, Nitz D, Nosek D, Novotny V, Nožka L, Nucita A, Núñez L, Olinto A, Palatka M, Pallotta J, Panetta M, Papenbreer P, Parente G, Parra A, Pech M, Pedreira F, Pȩkala J, Pelayo R, Peña-Rodriguez J, Pereira L, Perlin M, Perrone L, Peters C, Petrera S, Phuntsok J, Pierog T, Pimenta M, Pirronello V, Platino M, Poh J, Pont B, Porowski C, Prado R, Privitera P, Prouza M, Puyleart A, Querchfeld S, Quinn S, Ramos-Pollan R, Rautenberg J, Ravignani D, Reininghaus M, Ridky J, Riehn F, Risse M, Ristori P, Rizi V, Rodrigues de Carvalho W, Rodriguez Rojo J, Roncoroni M, Roth M, Roulet E, Rovero A, Ruehl P, Saffi S, Saftoiu A, Salamida F, Salazar H, Salina G, Sanabria Gomez J, Sánchez F, Santos E, Santos E, Sarazin F, Sarmento R, Sarmiento-Cano C, Sato R, Savina P, Schauer M, Scherini V, Schieler H, Schimassek M, Schimp M, Schlüter F, Schmidt D, Scholten O, Schovánek P, Schröder F, Schröder S, Schumacher J, Sciutto S, Scornavacche M, Shellard R, Sigl G, Silli G, Sima O, Šmída R, Snow G, Sommers P, Soriano J, Souchard J, Squartini R, Stanca D, Stanič S, Stasielak J, Stassi P, Stolpovskiy M, Streich A, Suarez F, Suárez-Durán M, Sudholz T, Suomijärvi T, Supanitsky A, Šupík J, Szadkowski Z, Taboada A, Taborda O, Tapia A, Timmermans C, Todero Peixoto C, Tomé B, Torralba Elipe G, Travaini A, Travnicek P, Trini M, Tueros M, Ulrich R, Unger M, Urban M, Valdés Galicia J, Valiño I, Valore L, van Bodegom P, van den Berg A, van Vliet A, Varela E, Vargas Cárdenas B, Veberič D, Ventura C, Vergara Quispe I, Verzi V, Vicha J, Villaseñor L, Vink J, Vorobiov S, Wahlberg H, Watson A, Weber M, Weindl A, Wiedeński M, Wiencke L, Wilczyński H, Winchen T, Wirtz M, Wittkowski D, Wundheiler B, Yang L, Yushkov A, Zas E, Zavrtanik D, Zavrtanik M, Zehrer L, Zepeda A, Zimmermann B, Ziolkowski M, Zong Z, Zuccarello F. Data-driven estimation of the invisible energy of cosmic ray showers with the Pierre Auger Observatory. Int J Clin Exp Med 2019. [DOI: 10.1103/physrevd.100.082003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Consolati G, Nichetti D, Briatico Vangosa F, Quasso F. BEYOND THE SPHERICAL APPROXIMATION: ELONGATED FREE VOLUME HOLES IN RUBBERS: A POSITRON ANNIHILATION STUDY. Rubber Chemistry and Technology 2019. [DOI: 10.5254/rct.19.80452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
ABSTRACT
The free volume fraction, a key parameter for the understanding of mechanical and transport properties of polymers, has been evaluated in a fluoroelastomer and a cis-polyisoprene rubber by means of positron annihilation lifetime spectroscopy and dilatometry. The evaluation showed that the assumption of elongated holes allows one to get a very good agreement between the free volume fraction experimentally determined and the theoretical expectation based on the lattice-hole model. On the other hand, systematic discrepancies are found using the spherical approximation. Moreover, the average hole size is found to be correlated to the effective bond length leff, a parameter connected to reptation motions and largely independent of the polymer structure. The result sheds some light on conformational statistics for the most flexible linear polymers that approach Gaussian chain behavior.
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Affiliation(s)
- Giovanni Consolati
- Department of Aerospace Science and Technology, Politecnico di Milano, Via LaMasa, 34, 20156 Milano, Italy
- INFN, Sezione di Milano, via Celoria, 16, 20133 Milano, Italy
| | | | - Francesco Briatico Vangosa
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta,” Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133 Milano, Italy
| | - Fiorenza Quasso
- Department of Aerospace Science and Technology, Politecnico di Milano, Via LaMasa, 34, 20156 Milano, Italy
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Camper A, Aghion S, Amsler C, Antonello M, Belov A, Bonomi G, Brusa R, Caccia M, Caravita R, Castelli F, Cerchiari G, Comparat D, Consolati G, Demetrio A, Di Noto L, Doser M, Evans C, Fanì M, Ferragut R, Fesel J, Fontana A, Gerber S, Giammarchi M, Gligorova A, Guatieri F, Hackstock P, Haider S, Hinterberger A, Holmestad H, Kellerbauer A, Khalidova O, Krasnický D, Lagomarsino V, Lansonneur P, Lebrun P, Malbrunot C, Mariazzi S, Marton J, Matveev V, Müller S, Nebbia G, Nedelec P, Oberthaler M, Pagano D, Penasa L, Petracek V, Prelz F, Prevedelli M, Rienaecker B, Robert J, Røhne O, Rotondi A, Sandaker H, Santoro R, Smestad L, Sorrentino F, Testera G, Tietje I, Vujanovic M, Widmann E, Yzombard P, Zimmer C, Zmeskal J, Zurlo N. Imaging a positronium cloud in a 1 Tesla. EPJ Web Conf 2019. [DOI: 10.1051/epjconf/201919800004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report on recent developments in positronium work in the frame of antihydrogen production through charge exchange in the AEgIS collaboration [1]. In particular, we present a new technique based on spatially imaging a cloud of positronium by collecting the positrons emitted by photoionization. This background free diagnostic proves to be highly efficient and opens up new opportunities for spectroscopy on antimatter, control and laser manipulation of positronium clouds as well as Doppler velocimetry.
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Doser M, Aghion S, Amsler C, Bonomi G, Brusa RS, Caccia M, Caravita R, Castelli F, Cerchiari G, Comparat D, Consolati G, Demetrio A, Di Noto L, Evans C, Fanì M, Ferragut R, Fesel J, Fontana A, Gerber S, Giammarchi M, Gligorova A, Guatieri F, Haider S, Hinterberger A, Holmestad H, Kellerbauer A, Khalidova O, Krasnický D, Lagomarsino V, Lansonneur P, Lebrun P, Malbrunot C, Mariazzi S, Marton J, Matveev V, Mazzotta Z, Müller SR, Nebbia G, Nedelec P, Oberthaler M, Pacifico N, Pagano D, Penasa L, Petracek V, Prelz F, Prevedelli M, Rienaecker B, Robert J, Røhne OM, Rotondi A, Sandaker H, Santoro R, Smestad L, Sorrentino F, Testera G, Tietje IC, Widmann E, Yzombard P, Zimmer C, Zmeskal J, Zurlo N. AEgIS at ELENA: outlook for physics with a pulsed cold antihydrogen beam. Philos Trans A Math Phys Eng Sci 2018; 376:20170274. [PMID: 29459413 PMCID: PMC5829176 DOI: 10.1098/rsta.2017.0274] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/05/2017] [Indexed: 06/08/2023]
Abstract
The efficient production of cold antihydrogen atoms in particle traps at CERN's Antiproton Decelerator has opened up the possibility of performing direct measurements of the Earth's gravitational acceleration on purely antimatter bodies. The goal of the AEgIS collaboration is to measure the value of g for antimatter using a pulsed source of cold antihydrogen and a Moiré deflectometer/Talbot-Lau interferometer. The same antihydrogen beam is also very well suited to measuring precisely the ground-state hyperfine splitting of the anti-atom. The antihydrogen formation mechanism chosen by AEgIS is resonant charge exchange between cold antiprotons and Rydberg positronium. A series of technical developments regarding positrons and positronium (Ps formation in a dedicated room-temperature target, spectroscopy of the n=1-3 and n=3-15 transitions in Ps, Ps formation in a target at 10 K inside the 1 T magnetic field of the experiment) as well as antiprotons (high-efficiency trapping of [Formula: see text], radial compression to sub-millimetre radii of mixed [Formula: see text] plasmas in 1 T field, high-efficiency transfer of [Formula: see text] to the antihydrogen production trap using an in-flight launch and recapture procedure) were successfully implemented. Two further critical steps that are germane mainly to charge exchange formation of antihydrogen-cooling of antiprotons and formation of a beam of antihydrogen-are being addressed in parallel. The coming of ELENA will allow, in the very near future, the number of trappable antiprotons to be increased by more than a factor of 50. For the antihydrogen production scheme chosen by AEgIS, this will be reflected in a corresponding increase of produced antihydrogen atoms, leading to a significant reduction of measurement times and providing a path towards high-precision measurements.This article is part of the Theo Murphy meeting issue 'Antiproton physics in the ELENA era'.
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Affiliation(s)
- M Doser
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - S Aghion
- Politecnico of Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- INFN Milano, via Celoria 16, 20133 Milano, Italy
| | - C Amsler
- Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
| | - G Bonomi
- Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, 25123 Brescia, Italy
- INFN Pavia, via Bassi 6, 27100 Pavia, Italy
| | - R S Brusa
- Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
- TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
| | - M Caccia
- INFN Milano, via Celoria 16, 20133 Milano, Italy
- Department of Science, University of Insubria, via Valleggio 11, 22100 Como, Italy
| | - R Caravita
- Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova, Italy
- INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
| | - F Castelli
- INFN Milano, via Celoria 16, 20133 Milano, Italy
- Department of Physics, University of Milano, via Celoria 16, 20133 Milano, Italy
| | - G Cerchiari
- Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - D Comparat
- Laboratoire Aimé Cotton, Université Paris-Sud, ENS Cachan, CNRS, Université Paris-Saclay, 91405 Orsay Cedex, France
| | - G Consolati
- Politecnico of Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- INFN Milano, via Celoria 16, 20133 Milano, Italy
| | - A Demetrio
- Kirchhoff-Institute for Physics, Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany
| | - L Di Noto
- Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova, Italy
- INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
| | - C Evans
- Politecnico of Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- INFN Milano, via Celoria 16, 20133 Milano, Italy
| | - M Fanì
- Physics Department, CERN, 1211 Geneva 23, Switzerland
- Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova, Italy
- INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
| | - R Ferragut
- Politecnico of Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- INFN Milano, via Celoria 16, 20133 Milano, Italy
| | - J Fesel
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - A Fontana
- INFN Pavia, via Bassi 6, 27100 Pavia, Italy
| | - S Gerber
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - M Giammarchi
- INFN Milano, via Celoria 16, 20133 Milano, Italy
| | - A Gligorova
- Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
| | - F Guatieri
- Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
- TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
| | - S Haider
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | | | - H Holmestad
- Department of Physics, University of Oslo, Sem Slandsvei 24, 0371 Oslo, Norway
| | - A Kellerbauer
- Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - O Khalidova
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - D Krasnický
- INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
| | - V Lagomarsino
- Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova, Italy
- INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
| | - P Lansonneur
- Institute of Nuclear Physics, CNRS/IN2p3, University of Lyon 1, 69622 Villeurbanne, France
| | - P Lebrun
- Institute of Nuclear Physics, CNRS/IN2p3, University of Lyon 1, 69622 Villeurbanne, France
| | - C Malbrunot
- Physics Department, CERN, 1211 Geneva 23, Switzerland
- Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
| | - S Mariazzi
- INFN Padova, via Marzolo 8, 35131 Padova, Italy
| | - J Marton
- Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
| | - V Matveev
- Institute for Nuclear Research of the Russian Academy of Science, Moscow 117312, Russia
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - Z Mazzotta
- INFN Milano, via Celoria 16, 20133 Milano, Italy
- Department of Physics, University of Milano, via Celoria 16, 20133 Milano, Italy
| | - S R Müller
- Kirchhoff-Institute for Physics, Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany
| | - G Nebbia
- INFN Padova, via Marzolo 8, 35131 Padova, Italy
| | - P Nedelec
- Institute of Nuclear Physics, CNRS/IN2p3, University of Lyon 1, 69622 Villeurbanne, France
| | - M Oberthaler
- Kirchhoff-Institute for Physics, Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany
| | - N Pacifico
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - D Pagano
- Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, 25123 Brescia, Italy
- INFN Pavia, via Bassi 6, 27100 Pavia, Italy
| | - L Penasa
- Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
- TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento, Italy
| | - V Petracek
- Czech Technical University in Prague, Brehová 7, 11519 Prague 1, Czech Republic
| | - F Prelz
- INFN Milano, via Celoria 16, 20133 Milano, Italy
| | - M Prevedelli
- University of Bologna, Viale Berti Pichat 6/2, 40126 Bologna, Italy
| | - B Rienaecker
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - J Robert
- Laboratoire Aimé Cotton, Université Paris-Sud, ENS Cachan, CNRS, Université Paris-Saclay, 91405 Orsay Cedex, France
| | - O M Røhne
- Department of Physics, University of Oslo, Sem Slandsvei 24, 0371 Oslo, Norway
| | - A Rotondi
- INFN Pavia, via Bassi 6, 27100 Pavia, Italy
- Department of Physics, University of Pavia, via Bassi 6, 27100 Pavia, Italy
| | - H Sandaker
- Department of Physics, University of Oslo, Sem Slandsvei 24, 0371 Oslo, Norway
| | - R Santoro
- INFN Milano, via Celoria 16, 20133 Milano, Italy
- Department of Science, University of Insubria, via Valleggio 11, 22100 Como, Italy
| | - L Smestad
- Physics Department, CERN, 1211 Geneva 23, Switzerland
- The Research Council of Norway, PO Box 564, 1327 Lysaker, Norway
| | - F Sorrentino
- INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
| | - G Testera
- INFN Genova, via Dodecaneso 33, 16146 Genova, Italy
| | - I C Tietje
- Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - E Widmann
- Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
| | - P Yzombard
- Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - C Zimmer
- Physics Department, CERN, 1211 Geneva 23, Switzerland
- Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany
- Department of Physics, Heidelberg University, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany
| | - J Zmeskal
- Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
| | - N Zurlo
- INFN Pavia, via Bassi 6, 27100 Pavia, Italy
- Department of Civil Engineering, University of Brescia, via Branze 43, 25123 Brescia, Italy
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Panzarasa G, Osypova A, Consolati G, Quasso F, Soliveri G, Ribera J, Schwarze FWMR. Preparation of a Sepia Melanin and Poly(ethylene-alt-maleic Anhydride) Hybrid Material as an Adsorbent for Water Purification. Nanomaterials (Basel) 2018; 8:E54. [PMID: 29360734 PMCID: PMC5853687 DOI: 10.3390/nano8020054] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 01/16/2018] [Accepted: 01/19/2018] [Indexed: 11/23/2022]
Abstract
Meeting the increasing demand of clean water requires the development of novel efficient adsorbent materials for the removal of organic pollutants. In this context the use of natural, renewable sources is of special relevance and sepia melanin, thanks to its ability to bind a variety of organic and inorganic species, has already attracted interest for water purification. Here we describe the synthesis of a material obtained by the combination of sepia melanin and poly(ethylene-alt-maleic anhydride) (P(E-alt-MA)). Compared to sepia melanin, the resulting hybrid displays a high and fast adsorption efficiency towards methylene blue (a common industrial dye) for a wide pH range (from pH 2 to 12) and under high ionic strength conditions. It is easily recovered after use and can be reused up to three times. Given the wide availability of sepia melanin and P(E-alt-MA), the synthesis of our hybrid is simple and affordable, making it suitable for industrial water purification purposes.
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Affiliation(s)
- Guido Panzarasa
- Department of Polymer Engineering and Science, Montanuniversität, Otto-Glöckel Straβe 2, 8700 Leoben, Austria.
| | - Alina Osypova
- Laboratoire de Réactivité de Surface, Sorbonne Universités, UPMC Univ Paris 06, F-75005 Paris, France.
| | - Giovanni Consolati
- Department of Aerospace Science and Technology, Politecnico di Milano, via La Masa 34, 20156 Milano, Italy.
- INFN, Sezione di Milano, via Celoria 16, 20133 Milano, Italy.
| | - Fiorenza Quasso
- Department of Aerospace Science and Technology, Politecnico di Milano, via La Masa 34, 20156 Milano, Italy.
| | - Guido Soliveri
- Department of Chemistry, Université de Montréal, C.P. 6128 Succ. Centre-ville, Montréal, QC H3C 3J7, Canada.
| | - Javier Ribera
- Empa Materials Science and Technology, Laboratory for Applied Wood Materials, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland.
| | - Francis W M R Schwarze
- Empa Materials Science and Technology, Laboratory for Applied Wood Materials, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland.
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Guatieri F, Aghion S, Amsler C, Angela G, Bonomi G, Brusa R, Caccia M, Caravita R, Castelli F, Cerchiari G, Comparat D, Consolati G, Demetrio A, Di Noto L, Doser M, Evans C, Fanì M, Ferragut R, Fesel J, Fontana A, Gerber S, Giammarchi M, Gligorova A, Haider S, Hinterberger A, Holmestad H, Kellerbauer A, Krasnický D, Lagomarsino V, Lansonneur P, Lebrun P, Malbrunot C, Mariazzi S, Matveev V, Mazzotta Z, Müller S, Nebbia G, Nedelec P, Oberthaler M, Pacifico N, Pagano D, Penasa L, Petracek V, Prelz F, Prevedelli M, Rienaecker B, Robert J, Rhne. O, Rotondi A, Sacerdoti M, Sandaker H, Santoro R, Simon M, Smestad L, Sorrentino F, Testera G, Tietje I, Widmann E, Yzombard P, Zimmer C, Zmeskal J, Zurlo N. AEg̅IS latest results. EPJ Web of Conferences 2018. [DOI: 10.1051/epjconf/201718101037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The validity of the Weak Equivalence Principle (WEP) as predicted by General Relativity has been tested up to astounding precision using ordinary matter. The lack hitherto of a stable source of a probe being at the same time electrically neutral, cold and stable enough to be measured has prevented highaccuracy testing of the WEP on anti-matter. The AEg̅IS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) experiment located at CERN's AD (Antiproton Decelerator) facility aims at producing such a probe in the form of a pulsed beam of cold anti-hydrogen, and at measuring by means of a moiré deflectometer the gravitational force that Earth's mass exerts on it. Low temperature and abundance of the H̅ are paramount to attain a high precision measurement. A technique employing a charge-exchange reaction between antiprotons coming from the AD and excited positronium atoms is being developed at AEg̅IS and will be presented hereafter, alongside an overview of the experimental apparatus and the current status of the experiment
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Evans C, Aghion S, Amsler C, Bonomi G, Brusa R, Caccia M, Caravita R, Castelli F, Cerchiari G, Comparat D, Consolati G, Demetrio A, Di Noto L, Doser M, Fani M, Ferragut R, Fesel J, Fontana A, Gerber S, Giammarchi M, Gligorova A, Guatieri F, Haider S, Hinterberger A, Holmestad H, Kellerbauer A, Khalidova O, Krasnický D, Lagomarsino V, Lansonneur P, Lebrun P, Malbrunot C, Mariazzi S, Marton J, Matveev V, Mazzotta Z, Müller S, Nebbia G, Nedelec P, Oberthaler M, Pacifico N, Pagano D, Penasa L, Petracek V, Prelz F, Prevedelli M, Ravelli L, Rienaecker B, Robert J, Røhne O, Rotondi A, Sandaker H, Santoro R, Smestad L, Sorrentino F, Testera G, Tietje I, Widmann E, Yzombard P, Zimmer C, Zmeskal J, Zurlo N. Towards the first measurement of matter-antimatter gravitational interaction. EPJ Web Conf 2018. [DOI: 10.1051/epjconf/201818202040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The AEgIS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) is a CERN based experiment with the central aim to measure directly the gravitational acceleration of antihydrogen. Antihydrogen atoms will be produced via charge exchange reactions which will consist of Rydberg-excited positronium atoms sent to cooled antiprotons within an electromagnetic trap. The resulting Rydberg antihydrogen atoms will then be horizontally accelerated by an electric field gradient (Stark effect), they will then pass through a moiré deflectometer. The vertical deflection caused by the Earth's gravitational field will test for the first time the Weak Equivalence Principle for antimatter. Detection will be undertaken via a position sensitive detector. Around 103 antihydrogen atoms are needed for the gravitational measurement to be completed. The present status, current achievements and results will be presented, with special attention toward the laser excitation of positronium (Ps) to the n=3 state and the production of Ps atoms in the transmission geometry.
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Negrin M, Macerata E, Consolati G, Quasso F, Genovese L, Soccio M, Giola M, Lotti N, Munari A, Mariani M. Gamma radiation effects on random copolymers based on poly(butylene succinate) for packaging applications. Radiat Phys Chem Oxf Engl 1993 2018. [DOI: 10.1016/j.radphyschem.2017.05.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Aab A, Abreu P, Aglietta M, Al Samarai I, Albuquerque I, Allekotte I, Almela A, Alvarez Castillo J, Alvarez-Muñiz J, Anastasi G, Anchordoqui L, Andrada B, Andringa S, Aramo C, Arqueros F, Arsene N, Asorey H, Assis P, Aublin J, Avila G, Badescu A, Balaceanu A, Barbato F, Barreira Luz R, Beatty J, Becker K, Bellido J, Berat C, Bertaina M, Bertou X, Biermann P, Biteau J, Blaess S, Blanco A, Blazek J, Bleve C, Boháčová M, Boncioli D, Bonifazi C, Borodai N, Botti A, Brack J, Brancus I, Bretz T, Bridgeman A, Briechle F, Buchholz P, Bueno A, Buitink S, Buscemi M, Caballero-Mora K, Caccianiga L, Cancio A, Canfora F, Caramete L, Caruso R, Castellina A, Catalani F, Cataldi G, Cazon L, Chavez A, Chinellato J, Chudoba J, Clay R, Cobos A, Colalillo R, Coleman A, Collica L, Coluccia M, Conceição R, Consolati G, Contreras F, Cooper M, Coutu S, Covault C, Cronin J, D’Amico S, Daniel B, Dasso S, Daumiller K, Dawson B, de Almeida R, de Jong S, De Mauro G, de Mello Neto J, De Mitri I, de Oliveira J, de Souza V, Debatin J, Deligny O, Díaz Castro M, Diogo F, Dobrigkeit C, D’Olivo J, Dorosti Q, dos Anjos R, Dova M, Dundovic A, Ebr J, Engel R, Erdmann M, Erfani M, Escobar C, Espadanal J, Etchegoyen A, Falcke H, Farmer J, Farrar G, Fauth A, Fazzini N, Fenu F, Fick B, Figueira J, Filipčič A, Fratu O, Freire M, Fujii T, Fuster A, Gaior R, García B, Garcia-Pinto D, Gaté F, Gemmeke H, Gherghel-Lascu A, Ghia P, Giaccari U, Giammarchi M, Giller M, Głas D, Glaser C, Golup G, Gómez Berisso M, Gómez Vitale P, González N, Gorgi A, Gorham P, Grillo A, Grubb T, Guarino F, Guedes G, Halliday R, Hampel M, Hansen P, Harari D, Harrison T, Harton J, Haungs A, Hebbeker T, Heck D, Heimann P, Herve A, Hill G, Hojvat C, Holt E, Homola P, Hörandel J, Horvath P, Hrabovský M, Huege T, Hulsman J, Insolia A, Isar P, Jandt I, Johnsen J, Josebachuili M, Jurysek J, Kääpä A, Kambeitz O, Kampert K, Keilhauer B, Kemmerich N, Kemp E, Kemp J, Kieckhafer R, Klages H, Kleifges M, Kleinfeller J, Krause R, Krohm N, Kuempel D, Kukec Mezek G, Kunka N, Kuotb Awad A, Lago B, LaHurd D, Lang R, Lauscher M, Legumina R, Leigui de Oliveira M, Letessier-Selvon A, Lhenry-Yvon I, Link K, Lo Presti D, Lopes L, López R, López Casado A, Lorek R, Luce Q, Lucero A, Malacari M, Mallamaci M, Mandat D, Mantsch P, Mariazzi A, Mariş I, Marsella G, Martello D, Martinez H, Martínez Bravo O, Masías Meza J, Mathes H, Mathys S, Matthews J, Matthews J, Matthiae G, Mayotte E, Mazur P, Medina C, Medina-Tanco G, Melo D, Menshikov A, Merenda KD, Michal S, Micheletti M, Middendorf L, Miramonti L, Mitrica B, Mockler D, Mollerach S, Montanet F, Morello C, Mostafá M, Müller A, Müller G, Muller M, Müller S, Mussa R, Naranjo I, Nellen L, Nguyen P, Niculescu-Oglinzanu M, Niechciol M, Niemietz L, Niggemann T, Nitz D, Nosek D, Novotny V, Nožka L, Núñez L, Ochilo L, Oikonomou F, Olinto A, Palatka M, Pallotta J, Papenbreer P, Parente G, Parra A, Paul T, Pech M, Pedreira F, Pękala J, Pelayo R, Peña-Rodriguez J, Pereira L, Perlin M, Perrone L, Peters C, Petrera S, Phuntsok J, Piegaia R, Pierog T, Pimenta M, Pirronello V, Platino M, Plum M, Porowski C, Prado R, Privitera P, Prouza M, Quel E, Querchfeld S, Quinn S, Ramos-Pollan R, Rautenberg J, Ravignani D, Ridky J, Riehn F, Risse M, Ristori P, Rizi V, Rodrigues de Carvalho W, Rodriguez Fernandez G, Rodriguez Rojo J, Rogozin D, Roncoroni M, Roth M, Roulet E, Rovero A, Ruehl P, Saffi S, Saftoiu A, Salamida F, Salazar H, Saleh A, Salesa Greus F, Salina G, Sánchez F, Sanchez-Lucas P, Santos E, Santos E, Sarazin F, Sarmento R, Sarmiento-Cano C, Sato R, Schauer M, Scherini V, Schieler H, Schimp M, Schmidt D, Scholten O, Schovánek P, Schröder F, Schröder S, Schulz A, Schumacher J, Sciutto S, Segreto A, Shadkam A, Shellard R, Sigl G, Silli G, Sima O, Śmiałkowski A, Šmída R, Smith B, Snow G, Sommers P, Sonntag S, Squartini R, Stanca D, Stanič S, Stasielak J, Stassi P, Stolpovskiy M, Strafella F, Streich A, Suarez F, Suarez Durán M, Sudholz T, Suomijärvi T, Supanitsky A, Šupík J, Swain J, Szadkowski Z, Taboada A, Taborda O, Theodoro V, Timmermans C, Todero Peixoto C, Tomankova L, Tomé B, Torralba Elipe G, Travnicek P, Trini M, Ulrich R, Unger M, Urban M, Valdés Galicia J, Valiño I, Valore L, van Aar G, van Bodegom P, van den Berg A, van Vliet A, Varela E, Vargas Cárdenas B, Varner G, Vázquez R, Veberič D, Ventura C, Vergara Quispe I, Verzi V, Vicha J, Villaseñor L, Vorobiov S, Wahlberg H, Wainberg O, Walz D, Watson A, Weber M, Weindl A, Wiencke L, Wilczyński H, Wileman C, Wirtz M, Wittkowski D, Wundheiler B, Yang L, Yushkov A, Zas E, Zavrtanik D, Zavrtanik M, Zepeda A, Zimmermann B, Ziolkowski M, Zong Z, Zuccarello F. Inferences on mass composition and tests of hadronic interactions from 0.3 to 100 EeV using the water-Cherenkov detectors of the Pierre Auger Observatory. Int J Clin Exp Med 2017. [DOI: 10.1103/physrevd.96.122003] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Panzarasa G, Aghion S, Marra G, Wagner A, Liedke MO, Elsayed M, Krause-Rehberg R, Ferragut R, Consolati G. Probing the Impact of the Initiator Layer on Grafted-from Polymer Brushes: A Positron Annihilation Spectroscopy Study. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00953] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Guido Panzarasa
- Department
of Polymer Engineering and Science, Montanuniversität, Otto-Glöckel Straβe
2, 8700 Leoben, Austria
| | - Stefano Aghion
- LNESS,
Department of Physics, Politecnico di Milano, via Anzani 42, 22100 Como, Italy
- Istituto Nazionale
di Fisica Nucleare, via Celoria 16, 20133 Milano, Italy
| | - Gianluigi Marra
- Eni Donegani Research
Center for Renewable Energies and Environment, Via Fauser 4, 28100 Novara, Italy
| | - Andreas Wagner
- Institute
of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner
Landstraße 400, 01328 Dresden, Germany
| | - Maciej Oskar Liedke
- Institute
of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner
Landstraße 400, 01328 Dresden, Germany
| | - Mohamed Elsayed
- Institut
für Physik, Martin-Luther-Universität Halle, 06099 Halle, Germany
| | | | - Rafael Ferragut
- LNESS,
Department of Physics, Politecnico di Milano, via Anzani 42, 22100 Como, Italy
- Istituto Nazionale
di Fisica Nucleare, via Celoria 16, 20133 Milano, Italy
| | - Giovanni Consolati
- Department
of Aerospace Science and Technology, Politecnico di Milano, via La Masa
34, 20156 Milano, Italy
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Pandini S, Bignotti F, Baldi F, Sartore L, Consolati G, Panzarasa G. Thermomechanical and large deformation behaviors of antiplasticized epoxy resins: Effect of material formulation and network architecture. POLYM ENG SCI 2017. [DOI: 10.1002/pen.24555] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Stefano Pandini
- Department of Mechanical and Industrial Engineering; University of Brescia; Via Branze 38 Brescia 25123 Italy
| | - Fabio Bignotti
- Department of Mechanical and Industrial Engineering; University of Brescia; Via Branze 38 Brescia 25123 Italy
| | - Francesco Baldi
- Department of Mechanical and Industrial Engineering; University of Brescia; Via Branze 38 Brescia 25123 Italy
| | - Luciana Sartore
- Department of Mechanical and Industrial Engineering; University of Brescia; Via Branze 38 Brescia 25123 Italy
| | - Giovanni Consolati
- Department of Aerospace Science and Technology; Politecnico di Milano; Piazza Leonardo da Vinci 32 Milano 20133 Italy
| | - Guido Panzarasa
- Department of Polymer Engineering and Science; Montanuniversität; Otto-Glöckel Strasse 2 Leoben 8700 Austria
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Malavasi I, Consolati G, Quasso F, Soccio M, Gigli M, Negrin M, Macerata E, Giacobbo F, Lotti N, Munari A, Mariani M. Effect of gamma irradiation on poly(butylene naphthalate) based polyesters. Radiat Phys Chem Oxf Engl 1993 2016. [DOI: 10.1016/j.radphyschem.2015.11.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Marlotti Tanzi G, Castelli F, Consolati G. Positronium Confinement in Small Cavities: A Two-Particle Model for the Lowering of Contact Density. Phys Rev Lett 2016; 116:033401. [PMID: 26849593 DOI: 10.1103/physrevlett.116.033401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Indexed: 06/05/2023]
Abstract
Positronium (Ps) is widely used as a probe for studying nanometric porosities in condensed matter. Accessible experimental measurements concern annihilation rates by pickoff processes and contact densities (the electron density at the positron position). Existing models for describing Ps properties in small cavities do not justify the lowering of the contact density with respect to that of Ps in vacuum, as found in most materials. We formulate a two-particle model in which only the electron is confined in the cavity, while the positron is moving freely and feels the medium via a positive work function. Our calculation fully explains experimental data for a large class of materials and suggests a way to gain information on pore sizes and positron work functions.
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Affiliation(s)
- G Marlotti Tanzi
- Department of Physics, Università degli Studi di Milano, via Celoria 16, I-20133 Milano, Italy
| | - F Castelli
- Department of Physics, Università degli Studi di Milano, via Celoria 16, I-20133 Milano, Italy
- INFN, sezione di Milano, via Celoria 16, I-20133 Milano, Italy
| | - G Consolati
- INFN, sezione di Milano, via Celoria 16, I-20133 Milano, Italy
- Department of Aerospace Science and Technology, Politecnico di Milano, via LaMasa 34, I-20156 Milano, Italy
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Panzarasa G, Aghion S, Soliveri G, Consolati G, Ferragut R. Positron annihilation spectroscopy: a new frontier for understanding nanoparticle-loaded polymer brushes. Nanotechnology 2016; 27:02LT03. [PMID: 26630081 DOI: 10.1088/0957-4484/27/2/02lt03] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Nanoparticle-loaded polymer brushes are powerful tools for the development of innovative devices. However, their characterization is challenging and arrays of different techniques are typically required to gain sufficient insight. Here we demonstrate for the first time the suitability of positron annihilation spectroscopy (PAS) to investigate, with unprecedented detail and without making the least damage to samples, the physico-chemical changes experienced by pH-responsive polymer brushes after protonation and after loading of silver nanoparticles. One of the most important findings is the depth profiling of silver nanoparticles inside the brushes. These results open up a completely new way to understand the structure and behavior of such complex systems.
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Affiliation(s)
- Guido Panzarasa
- Department of Science and Technological Innovation, Università del Piemonte Orientale 'Amedeo Avogadro', viale T. Michel 11, 15100 Alessandria, Italy
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Kellerbauer A, Aghion S, Amsler C, Ariga A, Ariga T, Bonomi G, Bräunig P, Bremer J, Brusa RS, Cabaret L, Caccia M, Caravita R, Castelli F, Cerchiari G, Chlouba K, Cialdi S, Comparat D, Consolati G, Demetrio A, Di Noto L, Doser M, Dudarev A, Ereditato A, Evans C, Ferragut R, Fesel J, Fontana A, Gerber S, Giammarchi M, Gligorova A, Guatieri F, Haider S, Holmestad H, Huse T, Jordan E, Kimura M, Koettig T, Krasnický D, Lagomarsino V, Lansonneur P, Lebrun P, Lehner S, Liberadzka J, Malbrunot C, Mariazzi S, Matveev V, Mazzotta Z, Nebbia G, Nédélec P, Oberthaler M, Pacifico N, Pagano D, Penasa L, Petráček V, Pistillo C, Prelz F, Prevedelli M, Ravelli L, Rienäcker B, Røhne O, Rotondi A, Sacerdoti M, Sandaker H, Santoro R, Scampoli P, Smestad L, Sorrentino F, Špaček M, Storey J, Strojek I, Testera G, Tietje I, Widmann E, Yzombard P, Zavatarelli S, Zmeskal J, Zurlo N. Probing antimatter gravity – The AEGIS experiment at CERN. EPJ Web Conf 2016. [DOI: 10.1051/epjconf/201612602016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Consolati G, Aghion S, Amsler C, Ariga A, Ariga T, Belov A, Bonomi G, Bräunig P, Bremer J, Brusa R, Cabaret L, Caccia M, Caravita R, Castelli F, Cerchiari G, Chlouba K, Cialdi S, Comparat D, Demetrio A, Derking H, Di Noto L, Doser M, Dudarev A, Ereditato A, Ferragut R, Fontana A, Gerber S, Giammarchi M, Gligorova A, Gninenko S, Haider S, Hogan S, Holmestad H, Huse T, Jordan EJ, Kawada J, Kellerbauer A, Kimura M, Krasnicky D, Lagomarsino V, Lehner S, Malbrunot C, Mariazzi S, Matveev V, Mazzotta Z, Nebbia G, Nedelec P, Oberthaler M, Pacifico N, Penasa L, Petracek V, Pistillo C, Prelz F, Prevedelli M, Ravelli L, Riccardi C, Røhne O, Rosenberger S, Rotondi A, Sacerdoti M, Sandaker H, Santoro R, Scampoli P, Simon M, Spacek M, Storey J, Strojek IM, Subieta M, Testera G, Widmann E, Yzombard P, Zavatarelli S, Zmeskal J. Experiments with low-energy antimatter. EPJ Web of Conferences 2015. [DOI: 10.1051/epjconf/20159601007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Subieta Vasquez MA, Aghion S, Ahlén O, Amsler C, Ariga A, Ariga T, Belov AS, Bonomi G, Bräunig P, Bremer J, Brusa RS, Cabaret L, Caccia M, Canali C, Caravita R, Castelli F, Cerchiari G, Cialdi S, Comparat D, Consolati G, Dassa L, Derking JH, Di Domizio S, Di Noto L, Doser M, Dudarev A, Ereditato A, Ferragut R, Fontana A, Genova P, Giammarchi M, Gligorova A, Gninenko SN, Heider S, Hogan SD, Huse T, Jordan E, Jørgensen LV, Kaltenbacher T, Kawada J, Kellerbauer A, Kimura M, Knecht A, Krasnický D, Lagomarsino V, Mariazzi S, Matveev VA, Merkt F, Moia F, Nebbia G, Nédélec P, Oberthaler MK, Pacifico N, Petráček V, Pistilo C, Prelz F, Prevedelli M, Regenfus C, Ricardi C, Røhne O, Rotondi A, Sandaker H, Scampoli P, Storey J, Špaček M, Testera G, Trezzi D, Vaccarone R, Villa F, Zavatarelli S. AE$\overline {\rm{g}}$IS Experiment: Measuring the acceleration gof the earth’s gravitational field on antihydrogen beam. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20147100128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
The features of positronium in an amorphous copolymer (polyvinyl acetate-crotonic acid) in a range of temperatures including the glass transition were investigated by means of positron annihilation lifetime spectroscopy. In particular, para-positronium lifetime was found to be longer than in a vacuum and to decrease with the temperature. This was attributed to the electron density at the positron (contact density), which is lower than in vacuo due to the presence of polar groups in the copolymer. A three quantum yield experiment confirmed the lifetime results.
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Affiliation(s)
- G Consolati
- Department of Aerospace Science and Technology, Politecnico di Milano, via La Masa, 34, Milano 20156, Italy
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Abstract
Antimatter is barely known by the chemist community and this article has the vocation to explain how antimatter, in particular antihydrogen, can be obtained, as well as to show how mesoporous materials could be used as a further improvement for the production of antimatter at very low temperatures (below 1 K). The first experiments with mesoporous materials highlighted in this review show very promising and exciting results. Mesoporous materials such as mesoporous silicon, mesoporous material films, pellets of MCM-41 and silica aerogel show remarkable features for antihydrogen formation. Yet, the characteristics for the best future mesoporous materials (e.g. pore sizes, pore connectivity, shape, surface chemistry) remain to be clearly identified. For now among the best candidates are pellets of MCM-41 and aerogel with pore sizes between 10 and 30 nm, possessing hydrophobic patches on their surface to avoid ice formation at low temperature. From a fundamental standpoint, antimatter experiments could help to shed light on open issues, such as the apparent asymmetry between matter and antimatter in our universe and the gravitational behaviour of antimatter. To this purpose, basic studies on antimatter are necessary and a convenient production of antimatter is required. It is exactly where mesoporous materials could be very useful.
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Affiliation(s)
- Giovanni Consolati
- Department of Aerospace Science and Technology, Politecnico di Milano, via La Masa 34, 20156, Milano, Italy.
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Salgueiro W, Somoza A, Silva L, Consolati G, Quasso F, Mansilla MA, Marzocca AJ. Temperature dependence on free volume in cured natural rubber and styrene-butadiene rubber blends. Phys Rev E Stat Nonlin Soft Matter Phys 2011; 83:051805. [PMID: 21728565 DOI: 10.1103/physreve.83.051805] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2010] [Revised: 04/07/2011] [Indexed: 05/31/2023]
Abstract
A systematic study on the evolution of free volume as a function of the temperature in vulcanized at 433 K natural rubber (NR) and styrene butadiene rubber (SBR) in 25-75, 50-50, 75-25 NR-SBR (percent content of pure NR and SBR, respectively) blends was studied by positron annihilation lifetime spectroscopy. All samples were prepared with sulfur and TBBS (n-t-butyl-2-benzothiazole sulfenamide) as accelerator. The glass transition temperatures of the samples studied were determined by differential scanning calorimetry (DSC) and from lifetime data. In general, a sigmoidal-like complex behavior of the long-lived lifetime component, linked to the nanohole free volume, as a function of the temperature was found. For SBR, the slope of the ortho-positronium lifetime against temperature curves could be well-fitted using a linear function. For blends and also for NR, two different linear functions were necessary. This last behavior is explained in terms of the supercooled process involving a reconfiguration of the elastomeric chains. In the case of blends, the state of cure of NR and SBR in each NR-SBR sample was also taken into account in the discussion of the results obtained. Besides, thermal expansion coefficients of the free volumes in the transition and glassy region of all compounds were estimated. The differences observed in the values of this parameter are discussed by taking into account the morphology and formulation of each blend, the crosslink densities, and the role of the interphases formed between both NR and SBR elastomers.
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Affiliation(s)
- W Salgueiro
- IFIMAT-UNCentro, Pinto 399, B7000GHG Tandil, Argentina
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Mariani M, Consolati G, Quasso F, Lotti N, Munari A, Galletta M, Macerata E. Effects of gamma irradiation on poly(ethylene isophthalate). J Radioanal Nucl Chem 2010. [DOI: 10.1007/s10967-010-0778-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Bisi A, Consolati G, Gambarini G, Zappa L. Effects of collisions with paramagnetic ions on the magnetic quenching of positronium. ACTA ACUST UNITED AC 2008. [DOI: 10.1007/bf02888829] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
To determine the free volume in polymers, positron annihilation lifetime spectroscopy data are transformed into nanohole volumes by modeling the cavities as spheres or, more generally, using geometries assuming an isotropic thermal expansion. However, this guess could be unrealistic owing to the irregular shape of nanoholes and constrained movements of the macromolecules. In this work, it is shown that a comparison of hole-lattice theory with positron and dilatometric data for a homologous series of perfluoropolyethers supplies information on the anisotropic expansion of nanoholes; the relation between volume and typical unconstrained size of the cavities can be expressed by a power law with noninteger exponents.
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Affiliation(s)
- G Consolati
- Dipartimento di Fisica, Istituto Nazionale per la Fisica della Materia, Politecnico di Milano, Piazza Leonardo da Vinci, 32-20133 Milano, Italy.
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41
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Salgueiro W, Somozaa A, Marzocca A, Consolati G, Quasso F. Evolution of the crosslink structure in the elastomers NR and SBR. Radiat Phys Chem Oxf Engl 1993 2007. [DOI: 10.1016/j.radphyschem.2006.03.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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42
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Félix M, Consolati G, Velázquez R, Castaño V. Positron annihilation studies of nanoholes and microphase formation control of a PMMA+MMA+TEGDMA system. POLYMER 2006. [DOI: 10.1016/j.polymer.2005.11.043] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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43
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Laporta M, Pegoraro M, Bianchi F, Consolati G, Zanderighi L. Composition, preparation procedure and physical properties of linear homogeneous polyurethanes for membranes. POLYM INT 2005. [DOI: 10.1002/pi.1734] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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44
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Consolati G. Evolution of porosity in a Portland cement paste studied through positron annihilation lifetime spectroscopy. Radiat Phys Chem Oxf Engl 1993 2003. [DOI: 10.1016/s0969-806x(03)00221-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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45
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Goyanes S, Rubiolo G, Marzocca A, Salgueiro W, Somoza A, Consolati G, Mondragon I. Yield and internal stresses in aluminum filled epoxy resin. A compression test and positron annihilation analysis. POLYMER 2003. [DOI: 10.1016/s0032-3861(03)00229-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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46
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Brambilla L, Consolati G, Gallo R, Quasso F, Severini F. Environmental degradation of isotactic polypropylene plates as studied by positron annihilation lifetime spectroscopy. POLYMER 2003. [DOI: 10.1016/s0032-3861(02)00904-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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47
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Buttafava A, Consolati G, Di Landro L, Mariani M. γ-Irradiation effects on polyethylene terephthalate studied by positron annihilation lifetime spectroscopy. POLYMER 2002. [DOI: 10.1016/s0032-3861(02)00708-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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48
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49
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50
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Consolati G, Kansy J, Pegoraro M, Quasso F, Zanderighi L. Positron annihilation study of free volume in cross-linked amorphous polyurethanes through the glass transition temperature. POLYMER 1998. [DOI: 10.1016/s0032-3861(97)10063-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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