1
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Mariette C, Lorenc M, Cailleau H, Collet E, Guérin L, Volte A, Trzop E, Bertoni R, Dong X, Lépine B, Hernandez O, Janod E, Cario L, Ta Phuoc V, Ohkoshi S, Tokoro H, Patthey L, Babic A, Usov I, Ozerov D, Sala L, Ebner S, Böhler P, Keller A, Oggenfuss A, Zmofing T, Redford S, Vetter S, Follath R, Juranic P, Schreiber A, Beaud P, Esposito V, Deng Y, Ingold G, Chergui M, Mancini GF, Mankowsky R, Svetina C, Zerdane S, Mozzanica A, Bosak A, Wulff M, Levantino M, Lemke H, Cammarata M. Strain wave pathway to semiconductor-to-metal transition revealed by time-resolved X-ray powder diffraction. Nat Commun 2021; 12:1239. [PMID: 33623010 PMCID: PMC7902810 DOI: 10.1038/s41467-021-21316-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 01/13/2021] [Indexed: 11/09/2022] Open
Abstract
One of the main challenges in ultrafast material science is to trigger phase transitions with short pulses of light. Here we show how strain waves, launched by electronic and structural precursor phenomena, determine a coherent macroscopic transformation pathway for the semiconducting-to-metal transition in bistable Ti3O5 nanocrystals. Employing femtosecond powder X-ray diffraction, we measure the lattice deformation in the phase transition as a function of time. We monitor the early intra-cell distortion around the light absorbing metal dimer and the long range deformations governed by acoustic waves propagating from the laser-exposed Ti3O5 surface. We developed a simplified elastic model demonstrating that picosecond switching in nanocrystals happens concomitantly with the propagating acoustic wavefront, several decades faster than thermal processes governed by heat diffusion.
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Affiliation(s)
- C Mariette
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France.
| | - M Lorenc
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France.
| | - H Cailleau
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France
| | - E Collet
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France
| | - L Guérin
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France
| | - A Volte
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France
| | - E Trzop
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France
| | - R Bertoni
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France
| | - X Dong
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France
| | - B Lépine
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France
| | - O Hernandez
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, Rennes, France
| | - E Janod
- Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, Nantes, France
| | - L Cario
- Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, Nantes, France
| | - V Ta Phuoc
- GREMAN-UMR 7347 CNRS, Université de Tours, Tours, France
| | - S Ohkoshi
- Department of Chemistry, School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - H Tokoro
- Department of Chemistry, School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan.,Department of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - L Patthey
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - A Babic
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - I Usov
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - D Ozerov
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - L Sala
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - S Ebner
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - P Böhler
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - A Keller
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - A Oggenfuss
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - T Zmofing
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - S Redford
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - S Vetter
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - R Follath
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - P Juranic
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - A Schreiber
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - P Beaud
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - V Esposito
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland.,Institute for Materials and Energy Science, Stanford University and SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Y Deng
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - G Ingold
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - M Chergui
- Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - G F Mancini
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland.,Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - R Mankowsky
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - C Svetina
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - S Zerdane
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - A Mozzanica
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - A Bosak
- European Synchrotron Radiation Facility, Grenoble, France
| | - M Wulff
- European Synchrotron Radiation Facility, Grenoble, France
| | - M Levantino
- European Synchrotron Radiation Facility, Grenoble, France
| | - H Lemke
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - M Cammarata
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France. .,European Synchrotron Radiation Facility, Grenoble, France.
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2
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Svetina C, Mankowsky R, Knopp G, Koch F, Seniutinas G, Rösner B, Kubec A, Lebugle M, Mochi I, Beck M, Cirelli C, Krempasky J, Pradervand C, Rouxel J, Mancini GF, Zerdane S, Pedrini B, Esposito V, Ingold G, Wagner U, Flechsig U, Follath R, Chergui M, Milne C, Lemke HT, David C, Beaud P. Towards X-ray transient grating spectroscopy. Opt Lett 2019; 44:574-577. [PMID: 30702682 DOI: 10.1364/ol.44.000574] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 12/22/2018] [Indexed: 06/09/2023]
Abstract
The extension of transient grating spectroscopy to the x-ray regime will create numerous opportunities, ranging from the study of thermal transport in the ballistic regime to charge, spin, and energy transfer processes with atomic spatial and femtosecond temporal resolution. Studies involving complicated split-and-delay lines have not yet been successful in achieving this goal. Here we propose a novel, simple method based on the Talbot effect for converging beams, which can easily be implemented at current x-ray free electron lasers. We validate our proposal by analyzing printed interference patterns on polymethyl methacrylate and gold samples using ∼3 keV X-ray pulses.
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3
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Ilchen M, Hartmann G, Gryzlova EV, Achner A, Allaria E, Beckmann A, Braune M, Buck J, Callegari C, Coffee RN, Cucini R, Danailov M, De Fanis A, Demidovich A, Ferrari E, Finetti P, Glaser L, Knie A, Lindahl AO, Plekan O, Mahne N, Mazza T, Raimondi L, Roussel E, Scholz F, Seltmann J, Shevchuk I, Svetina C, Walter P, Zangrando M, Viefhaus J, Grum-Grzhimailo AN, Meyer M. Symmetry breakdown of electron emission in extreme ultraviolet photoionization of argon. Nat Commun 2018; 9:4659. [PMID: 30405105 PMCID: PMC6220192 DOI: 10.1038/s41467-018-07152-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 10/16/2018] [Indexed: 11/09/2022] Open
Abstract
Short wavelength free-electron lasers (FELs), providing pulses of ultrahigh photon intensity, have revolutionized spectroscopy on ionic targets. Their exceptional photon flux enables multiple photon absorptions within a single femtosecond pulse, which in turn allows for deep insights into the photoionization process itself as well as into evolving ionic states of a target. Here we employ ultraintense pulses from the FEL FERMI to spectroscopically investigate the sequential emission of electrons from gaseous, atomic argon in the neutral as well as the ionic ground state. A pronounced forward-backward symmetry breaking of the angularly resolved emission patterns with respect to the light propagation direction is experimentally observed and theoretically explained for the region of the Cooper minimum, where the asymmetry of electron emission is strongly enhanced. These findings aim to originate a better understanding of the fundamentals of photon momentum transfer in ionic matter.
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Affiliation(s)
- M Ilchen
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany. .,Institut für Physik, University of Kassel, Heinrich-Plett-Straße 40, 34132, Kassel, Germany.
| | - G Hartmann
- Institut für Physik, University of Kassel, Heinrich-Plett-Straße 40, 34132, Kassel, Germany.,Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany
| | - E V Gryzlova
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - A Achner
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | - E Allaria
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - A Beckmann
- X-Spectrum GmbH, Notkestraße 85, 22607, Hamburg, Germany
| | - M Braune
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany
| | - J Buck
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany.,Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany
| | - C Callegari
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - R N Coffee
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - R Cucini
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - M Danailov
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - A De Fanis
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | - A Demidovich
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - E Ferrari
- Particle Accelerator Physics Laboratory, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - P Finetti
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - L Glaser
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany
| | - A Knie
- Institut für Physik, University of Kassel, Heinrich-Plett-Straße 40, 34132, Kassel, Germany
| | - A O Lindahl
- Qamcom Research & Technology AB, Falkenbergsgatan 3, SE-412 85, Gothenburg, Sweden
| | - O Plekan
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - N Mahne
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - T Mazza
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | - L Raimondi
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - E Roussel
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - F Scholz
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany
| | - J Seltmann
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany
| | - I Shevchuk
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany
| | - C Svetina
- Paul Scherrer Institut, 5232, Villingen PSI, Switzerland
| | - P Walter
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany.,SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - M Zangrando
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy.,CNR, IOM, Lab Nazl TASC, I-34149, Trieste, Italy
| | - J Viefhaus
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany
| | - A N Grum-Grzhimailo
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany.,Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - M Meyer
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
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4
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Allaria E, Badano L, Bassanese S, Capotondi F, Castronovo D, Cinquegrana P, Danailov MB, D'Auria G, Demidovich A, De Monte R, De Ninno G, Di Mitri S, Diviacco B, Fawley WM, Ferianis M, Ferrari E, Gaio G, Gauthier D, Giannessi L, Iazzourene F, Kurdi G, Mahne N, Nikolov I, Parmigiani F, Penco G, Raimondi L, Rebernik P, Rossi F, Roussel E, Scafuri C, Serpico C, Sigalotti P, Spezzani C, Svandrlik M, Svetina C, Trovó M, Veronese M, Zangrando D, Zangrando M. The FERMI free-electron lasers. J Synchrotron Radiat 2015; 22:485-491. [PMID: 25931057 DOI: 10.1107/s1600577515005366] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2014] [Accepted: 03/15/2015] [Indexed: 06/04/2023]
Abstract
FERMI is a seeded free-electron laser (FEL) facility located at the Elettra laboratory in Trieste, Italy, and is now in user operation with its first FEL line, FEL-1, covering the wavelength range between 100 and 20 nm. The second FEL line, FEL-2, a high-gain harmonic generation double-stage cascade covering the wavelength range 20-4 nm, has also completed commissioning and the first user call has been recently opened. An overview of the typical operating modes of the facility is presented.
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Affiliation(s)
- E Allaria
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - L Badano
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | | | | | | | | | | | - G D'Auria
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | | | - R De Monte
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - G De Ninno
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - S Di Mitri
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - B Diviacco
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - W M Fawley
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - M Ferianis
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - E Ferrari
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - G Gaio
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - D Gauthier
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | | | | | - G Kurdi
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - N Mahne
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - I Nikolov
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | | | - G Penco
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - L Raimondi
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - P Rebernik
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - F Rossi
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - E Roussel
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - C Scafuri
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - C Serpico
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | | | - C Spezzani
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | | | - C Svetina
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - M Trovó
- Elettra-Sincrotrone Trieste, Trieste, Italy
| | - M Veronese
- Elettra-Sincrotrone Trieste, Trieste, Italy
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5
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Spezzani C, Ferrari E, Allaria E, Vidal F, Ciavardini A, Delaunay R, Capotondi F, Pedersoli E, Coreno M, Svetina C, Raimondi L, Zangrando M, Ivanov R, Nikolov I, Demidovich A, Danailov MB, Popescu H, Eddrief M, De Ninno G, Kiskinova M, Sacchi M. Magnetization and microstructure dynamics in Fe/MnAs/GaAs(001): Fe magnetization reversal by a femtosecond laser pulse. Phys Rev Lett 2014; 113:247202. [PMID: 25541801 DOI: 10.1103/physrevlett.113.247202] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Indexed: 06/04/2023]
Abstract
Thin film magnetization reversal without applying external fields is an attractive perspective for applications in sensors and devices. One way to accomplish it is by fine-tuning the microstructure of a magnetic substrate via temperature control, as in the case of a thin Fe layer deposited on a MnAs/GaAs(001) template. This work reports a time-resolved resonant scattering study exploring the magnetic and structural properties of the Fe/MnAs system, using a 100 fs optical laser pulse to trigger local temperature variations and a 100 fs x-ray free-electron laser pulse to probe the induced magnetic and structural dynamics. The experiment provides direct evidence that a single optical laser pulse can reverse the Fe magnetization locally. It reveals that the time scale of the magnetization reversal is slower than that of the MnAs structural transformations triggered by the optical pulse, which take place after a few picoseconds already.
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Affiliation(s)
- C Spezzani
- ELETTRA-Sincrotrone Trieste, 34149 Trieste, Italy
| | - E Ferrari
- ELETTRA-Sincrotrone Trieste, 34149 Trieste, Italy and Dipartimento di Fisica, Università degli Studi di Trieste, 34127 Trieste, Italy
| | - E Allaria
- ELETTRA-Sincrotrone Trieste, 34149 Trieste, Italy
| | - F Vidal
- Sorbonne Universités, UPMC Univ Paris 06, UMR 7588, INSP, F-75005 Paris, France and CNRS, UMR 7588, Institut des NanoSciences de Paris, F-75005 Paris, France
| | - A Ciavardini
- CNR-ISM, via Salaria km 29, 300-00016 Monterotondo Scalo (RM), Italy
| | - R Delaunay
- Sorbonne Universités, UPMC Univ Paris 06, UMR 7614, LCPMR, F-75005 Paris, France and CNRS, UMR 7614, LCPMR, F-75005 Paris, France
| | - F Capotondi
- ELETTRA-Sincrotrone Trieste, 34149 Trieste, Italy
| | - E Pedersoli
- ELETTRA-Sincrotrone Trieste, 34149 Trieste, Italy
| | - M Coreno
- ELETTRA-Sincrotrone Trieste, 34149 Trieste, Italy and CNR-ISM, via Salaria km 29, 300-00016 Monterotondo Scalo (RM), Italy
| | - C Svetina
- ELETTRA-Sincrotrone Trieste, 34149 Trieste, Italy and Graduate School of Nanotechnology, University of Trieste, 34127 Trieste, Italy
| | - L Raimondi
- ELETTRA-Sincrotrone Trieste, 34149 Trieste, Italy
| | - M Zangrando
- ELETTRA-Sincrotrone Trieste, 34149 Trieste, Italy
| | - R Ivanov
- ELETTRA-Sincrotrone Trieste, 34149 Trieste, Italy
| | - I Nikolov
- ELETTRA-Sincrotrone Trieste, 34149 Trieste, Italy
| | - A Demidovich
- ELETTRA-Sincrotrone Trieste, 34149 Trieste, Italy
| | - M B Danailov
- ELETTRA-Sincrotrone Trieste, 34149 Trieste, Italy
| | - H Popescu
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, France
| | - M Eddrief
- Sorbonne Universités, UPMC Univ Paris 06, UMR 7588, INSP, F-75005 Paris, France and CNRS, UMR 7588, Institut des NanoSciences de Paris, F-75005 Paris, France
| | - G De Ninno
- ELETTRA-Sincrotrone Trieste, 34149 Trieste, Italy and Laboratory of Quantum Optics, University of Nova Gorica, 5001 Nova Gorica, Slovenia
| | - M Kiskinova
- ELETTRA-Sincrotrone Trieste, 34149 Trieste, Italy
| | - M Sacchi
- Sorbonne Universités, UPMC Univ Paris 06, UMR 7588, INSP, F-75005 Paris, France and CNRS, UMR 7588, Institut des NanoSciences de Paris, F-75005 Paris, France and Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, France
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6
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Mazza T, Ilchen M, Rafipoor AJ, Callegari C, Finetti P, Plekan O, Prince KC, Richter R, Danailov MB, Demidovich A, De Ninno G, Grazioli C, Ivanov R, Mahne N, Raimondi L, Svetina C, Avaldi L, Bolognesi P, Coreno M, O'Keeffe P, Di Fraia M, Devetta M, Ovcharenko Y, Möller T, Lyamayev V, Stienkemeier F, Düsterer S, Ueda K, Costello JT, Kazansky AK, Kabachnik NM, Meyer M. Determining the polarization state of an extreme ultraviolet free-electron laser beam using atomic circular dichroism. Nat Commun 2014; 5:3648. [DOI: 10.1038/ncomms4648] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Accepted: 03/14/2014] [Indexed: 11/09/2022] Open
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7
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Capotondi F, Pedersoli E, Mahne N, Menk RH, Passos G, Raimondi L, Svetina C, Sandrin G, Zangrando M, Kiskinova M, Bajt S, Barthelmess M, Fleckenstein H, Chapman HN, Schulz J, Bach J, Frömter R, Schleitzer S, Müller L, Gutt C, Grübel G. Invited article: Coherent imaging using seeded free-electron laser pulses with variable polarization: first results and research opportunities. Rev Sci Instrum 2013; 84:051301. [PMID: 23742525 DOI: 10.1063/1.4807157] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
FERMI@Elettra, the first vacuum ultraviolet and soft X-ray free-electron laser (FEL) using by default a "seeded" scheme, became operational in 2011 and has been opened to users since December 2012. The parameters of the seeded FERMI FEL pulses and, in particular, the superior control of emitted radiation in terms of spectral purity and stability meet the stringent requirements for single-shot and resonant coherent diffraction imaging (CDI) experiments. The advantages of the intense seeded FERMI pulses with variable polarization have been demonstrated with the first experiments performed using the multipurpose experimental station operated at the diffraction and projection imaging (DiProI) beamline. The results reported here were obtained with fixed non-periodic targets during the commissioning period in 2012 using 20-32 nm wavelength range. They demonstrate that the performance of the FERMI FEL source and the experimental station meets the requirements of CDI, holography, and resonant magnetic scattering in both multi- and single-shot modes. Moreover, we present the first magnetic scattering experiments employing the fully circularly polarized FERMI pulses. The ongoing developments aim at pushing the lateral resolution by using shorter wavelengths provided by double-stage cascaded FERMI FEL-2 and probing ultrafast dynamic processes using different pump-probe schemes, including jitter-free seed laser pump or FEL-pump∕FEL-probe with two color FEL pulses generated by the same electron bunch.
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Affiliation(s)
- F Capotondi
- FERMI, Elettra-Sincrotrone Trieste, SS 14 - km 163.5, 34149 Basovizza, Trieste, Italy
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8
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Zangrando M, Abrami A, Bacescu D, Cudin I, Fava C, Frassetto F, Galimberti A, Godnig R, Giuressi D, Poletto L, Rumiz L, Sergo R, Svetina C, Cocco D. The photon analysis, delivery, and reduction system at the FERMI@Elettra free electron laser user facility. Rev Sci Instrum 2009; 80:113110. [PMID: 19947720 DOI: 10.1063/1.3262502] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The FERMI@Elettra free electron laser (FEL) user facility is currently under construction at the Sincrotrone Trieste laboratory in Trieste (Italy). It will cover the wavelength range from 100 to about 5 nm in the fundamental and 3 or 1 nm using the third harmonic. We report the layout of the photon beam diagnostics section, the radiation transport system to the experimental area, and the photon beam distribution system. Due to the peculiar characteristics of the emitted FEL radiation (high peak power, short pulse length, and statistical variation of the emitted intensity and distribution), the realization of the diagnostics system is particularly challenging. The end users are interested in parameters such as the radiation pulse intensity and spectral distribution, as well as in the possibility to attenuate the intensity. In order to accomplish these tasks, a photon analysis, delivery, and reduction system is now under development and construction and is presented here. This system will work on-line producing pulse-resolved information and will let users keep track of the photon beam parameters during the experiments.
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Affiliation(s)
- M Zangrando
- Laboratorio TASC INFM-CNR, I-34149 Basovizza, Trieste, Italy.
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DeLisi L, Maurizio A, Svetina C, Ardekani B, Szulc K, Nierenberg J, Leonard J, Harvey P. Klinefelter's syndrome (XXY) as a genetic model for psychotic disorders. Am J Medical Genetics Part B (Neuropsychiatric Genetics) 135B: 15–23 (2005). Am J Med Genet 2006. [DOI: 10.1002/ajmg.b.30334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Abstract
Although subjective complaints of word finding and naming deficits are commonly reported by patients with Lyme Borreliosis (LB), the existence of these disturbances has not been thoroughly investigated. Forty-four patients with LB and 43 healthy controls were administered a symptom questionnaire, the Boston Naming Test (BNT), the Controlled Oral Word Association Test (COWAT), and a series of category naming tasks. LB patients had a higher rate of complaints of word-finding disturbance (55% vs. 14%). Lower mean scores were observed on the BNT, but not on the COWAT, nor on category naming tasks. Thirty-six percent of the LB sample exhibited BNT scores in the impaired range. BNT scores in this group were correlated with a measure of memory retrieval, but not with verbal fluency indexes. There was no relation between naming scores and depression. LB patients exhibit impairments in word finding that appear to be secondary to a generalized retrieval deficit.
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Affiliation(s)
- C Svetina
- Department of Medicine, Long Island Jewish Medical Center/Hillside Hospital, New Hyde Park, New York 11040, USA
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