1
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Nandi S, Stenquist A, Papoulia A, Olofsson E, Badano L, Bertolino M, Busto D, Callegari C, Carlström S, Danailov MB, Demekhin PV, Di Fraia M, Eng-Johnsson P, Feifel R, Gallician G, Giannessi L, Gisselbrecht M, Manfredda M, Meyer M, Miron C, Peschel J, Plekan O, Prince KC, Squibb RJ, Zangrando M, Zapata F, Zhong S, Dahlström JM. Generation of entanglement using a short-wavelength seeded free-electron laser. Sci Adv 2024; 10:eado0668. [PMID: 38630815 PMCID: PMC11023495 DOI: 10.1126/sciadv.ado0668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 03/14/2024] [Indexed: 04/19/2024]
Abstract
Quantum entanglement between the degrees of freedom encountered in the classical world is challenging to observe due to the surrounding environment. To elucidate this issue, we investigate the entanglement generated over ultrafast timescales in a bipartite quantum system comprising two massive particles: a free-moving photoelectron, which expands to a mesoscopic length scale, and a light-dressed atomic ion, which represents a hybrid state of light and matter. Although the photoelectron spectra are measured classically, the entanglement allows us to reveal information about the dressed-state dynamics of the ion and the femtosecond extreme ultraviolet pulses delivered by a seeded free-electron laser. The observed generation of entanglement is interpreted using the time-dependent von Neumann entropy. Our results unveil the potential for using short-wavelength coherent light pulses from free-electron lasers to generate entangled photoelectron and ion systems for studying spooky action at a distance.
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Affiliation(s)
- Saikat Nandi
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, 69622, Villeurbanne, France
| | - Axel Stenquist
- Department of Physics, Lund University, 22100 Lund, Sweden
| | | | - Edvin Olofsson
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - Laura Badano
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | | | - David Busto
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - Carlo Callegari
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | | | | | - Philipp V. Demekhin
- Institute of Physics and CINSaT, University of Kassel, 34132 Kassel, Germany
| | | | | | - Raimund Feifel
- Department of Physics, University of Gothenburg, 41258 Gothenburg, Sweden
| | | | - Luca Giannessi
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
| | | | | | | | - Catalin Miron
- Université Paris-Saclay, CEA, CNRS, LIDYL, 91191 Gif-sur-Yvette, France
- ELI-NP, “Horia Hulubei” National Institute for Physics and Nuclear Engineering, 077125 Mǎgurele, Romania
| | - Jasper Peschel
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - Oksana Plekan
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Kevin C. Prince
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Richard J. Squibb
- Department of Physics, University of Gothenburg, 41258 Gothenburg, Sweden
| | - Marco Zangrando
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
- IOM-CNR, Istituto Officina dei Materiali, 34149 Basovizza, Trieste, Italy
| | - Felipe Zapata
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - Shiyang Zhong
- Department of Physics, Lund University, 22100 Lund, Sweden
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2
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Borne KD, Cooper JC, Ashfold MNR, Bachmann J, Bhattacharyya S, Boll R, Bonanomi M, Bosch M, Callegari C, Centurion M, Coreno M, Curchod BFE, Danailov MB, Demidovich A, Di Fraia M, Erk B, Faccialà D, Feifel R, Forbes RJG, Hansen CS, Holland DMP, Ingle RA, Lindh R, Ma L, McGhee HG, Muvva SB, Nunes JPF, Odate A, Pathak S, Plekan O, Prince KC, Rebernik P, Rouzée A, Rudenko A, Simoncig A, Squibb RJ, Venkatachalam AS, Vozzi C, Weber PM, Kirrander A, Rolles D. Ultrafast electronic relaxation pathways of the molecular photoswitch quadricyclane. Nat Chem 2024; 16:499-505. [PMID: 38307994 PMCID: PMC10997510 DOI: 10.1038/s41557-023-01420-w] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Accepted: 12/11/2023] [Indexed: 02/04/2024]
Abstract
The light-induced ultrafast switching between molecular isomers norbornadiene and quadricyclane can reversibly store and release a substantial amount of chemical energy. Prior work observed signatures of ultrafast molecular dynamics in both isomers upon ultraviolet excitation but could not follow the electronic relaxation all the way back to the ground state experimentally. Here we study the electronic relaxation of quadricyclane after exciting in the ultraviolet (201 nanometres) using time-resolved gas-phase extreme ultraviolet photoelectron spectroscopy combined with non-adiabatic molecular dynamics simulations. We identify two competing pathways by which electronically excited quadricyclane molecules relax to the electronic ground state. The fast pathway (<100 femtoseconds) is distinguished by effective coupling to valence electronic states, while the slow pathway involves initial motions across Rydberg states and takes several hundred femtoseconds. Both pathways facilitate interconversion between the two isomers, albeit on different timescales, and we predict that the branching ratio of norbornadiene/quadricyclane products immediately after returning to the electronic ground state is approximately 3:2.
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Affiliation(s)
- Kurtis D Borne
- J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS, USA
| | - Joseph C Cooper
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford, UK
| | | | - Julien Bachmann
- Chemistry of Thin Film Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Surjendu Bhattacharyya
- J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS, USA
| | | | - Matteo Bonanomi
- Istituto di Fotonica e Nanotecnologie (CNR-IFN), CNR, Milano, Italy
- Dipartimento di Fisica, Politecnico di Milano, Milano, Italy
| | - Michael Bosch
- Chemistry of Thin Film Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | | | - Martin Centurion
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Marcello Coreno
- Elettra - Sincrotrone Trieste S.C.p.A., Trieste, Italy
- Istituto di Struttura della Materia (ISM-CNR), CNR, Trieste, Italy
| | | | | | | | | | - Benjamin Erk
- Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany
| | - Davide Faccialà
- Istituto di Fotonica e Nanotecnologie (CNR-IFN), CNR, Milano, Italy
| | - Raimund Feifel
- Department of Physics, University of Gothenburg, Gothenburg, Sweden
| | - Ruaridh J G Forbes
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Christopher S Hansen
- School of Chemistry, University of New South Wales, Sydney, New South Wales, Australia
| | | | - Rebecca A Ingle
- Department of Chemistry, University College London, London, UK
| | - Roland Lindh
- Department of Chemistry - BMC, Uppsala University, Uppsala, Sweden
| | - Lingyu Ma
- Department of Chemistry, Brown University, Providence, RI, USA
| | - Henry G McGhee
- Department of Chemistry, University College London, London, UK
| | - Sri Bhavya Muvva
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, NE, USA
| | | | - Asami Odate
- Department of Chemistry, Brown University, Providence, RI, USA
| | - Shashank Pathak
- J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS, USA
| | - Oksana Plekan
- Elettra - Sincrotrone Trieste S.C.p.A., Trieste, Italy
| | | | | | | | - Artem Rudenko
- J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS, USA
| | | | - Richard J Squibb
- Department of Physics, University of Gothenburg, Gothenburg, Sweden
| | | | - Caterina Vozzi
- Istituto di Fotonica e Nanotecnologie (CNR-IFN), CNR, Milano, Italy
| | - Peter M Weber
- Department of Chemistry, Brown University, Providence, RI, USA
| | - Adam Kirrander
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford, UK.
| | - Daniel Rolles
- J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS, USA.
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3
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Guillemin R, Inhester L, Ilchen M, Mazza T, Boll R, Weber T, Eckart S, Grychtol P, Rennhack N, Marchenko T, Velasquez N, Travnikova O, Ismail I, Niskanen J, Kukk E, Trinter F, Gisselbrecht M, Feifel R, Sansone G, Rolles D, Martins M, Meyer M, Simon M, Santra R, Pfeifer T, Jahnke T, Piancastelli MN. Isotope effects in dynamics of water isotopologues induced by core ionization at an x-ray free-electron laser. Struct Dyn 2023; 10:054302. [PMID: 37799711 PMCID: PMC10550338 DOI: 10.1063/4.0000197] [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] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 09/05/2023] [Indexed: 10/07/2023]
Abstract
Dynamical response of water exposed to x-rays is of utmost importance in a wealth of science areas. We exposed isolated water isotopologues to short x-ray pulses from a free-electron laser and detected momenta of all produced ions in coincidence. By combining experimental results and theoretical modeling, we identify significant structural dynamics with characteristic isotope effects in H2O2+, D2O2+, and HDO2+, such as asymmetric bond elongation and bond-angle opening, leading to two-body or three-body fragmentation on a timescale of a few femtoseconds. A method to disentangle the sequences of events taking place upon the consecutive absorption of two x-ray photons is described. The obtained deep look into structural properties and dynamics of dissociating water isotopologues provides essential insights into the underlying mechanisms.
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Affiliation(s)
- R. Guillemin
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | - L. Inhester
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | | | - T. Mazza
- European XFEL, 22869 Schenefeld, Germany
| | - R. Boll
- European XFEL, 22869 Schenefeld, Germany
| | - Th. Weber
- Lawrence Berkeley National Laboratory, Chemical Sciences, Berkeley, California 94720, USA
| | - S. Eckart
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt am Main, Germany
| | | | | | - T. Marchenko
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | - N. Velasquez
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | - O. Travnikova
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | - I. Ismail
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | - J. Niskanen
- Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland
| | - E. Kukk
- Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland
| | | | | | - R. Feifel
- Department of Physics, University of Gothenburg, 412 96 Gothenburg, Sweden
| | - G. Sansone
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - D. Rolles
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - M. Martins
- Institut für Experimentalphysik, Universität Hamburg, 22761 Hamburg, Germany
| | - M. Meyer
- European XFEL, 22869 Schenefeld, Germany
| | - M. Simon
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | | | - T. Pfeifer
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - T. Jahnke
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - M. N. Piancastelli
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
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4
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Perosa G, Wätzel J, Garzella D, Allaria E, Bonanomi M, Danailov MB, Brynes A, Callegari C, De Ninno G, Demidovich A, Di Fraia M, Di Mitri S, Giannessi L, Manfredda M, Novinec L, Pal N, Penco G, Plekan O, Prince KC, Simoncig A, Spampinati S, Spezzani C, Zangrando M, Berakdar J, Feifel R, Squibb RJ, Coffee R, Hemsing E, Roussel E, Sansone G, McNeil BWJ, Ribič PR. Femtosecond Polarization Shaping of Free-Electron Laser Pulses. Phys Rev Lett 2023; 131:045001. [PMID: 37566861 DOI: 10.1103/physrevlett.131.045001] [Citation(s) in RCA: 1] [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] [Received: 02/27/2023] [Accepted: 06/13/2023] [Indexed: 08/13/2023]
Abstract
We demonstrate the generation of extreme-ultraviolet (XUV) free-electron laser (FEL) pulses with time-dependent polarization. To achieve polarization modulation on a femtosecond timescale, we combine two mutually delayed counterrotating circularly polarized subpulses from two cross-polarized undulators. The polarization profile of the pulses is probed by angle-resolved photoemission and above-threshold ionization of helium; the results agree with solutions of the time-dependent Schrödinger equation. The stability limit of the scheme is mainly set by electron-beam energy fluctuations, however, at a level that will not compromise experiments in the XUV. Our results demonstrate the potential to improve the resolution and element selectivity of methods based on polarization shaping and may lead to the development of new coherent control schemes for probing and manipulating core electrons in matter.
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Affiliation(s)
- Giovanni Perosa
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
- Department of Physics, Università degli Studi di Trieste, 34127 Trieste, Italy
| | - Jonas Wätzel
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099 Halle (Saale), Germany
| | - David Garzella
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Enrico Allaria
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Matteo Bonanomi
- Politecnico di Milano, 20133 Milano, Italy
- Istituto di Fotonica e Nanotecnologie, 20133 Milano, Italy
| | | | | | - Carlo Callegari
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Giovanni De Ninno
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
- Laboratory of Quantum Optics, University of Nova Gorica, 5001 Nova Gorica, Slovenia
| | | | - Michele Di Fraia
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
- Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche, 34149 Basovizza, Italy
| | - Simone Di Mitri
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
- Department of Physics, Università degli Studi di Trieste, 34127 Trieste, Italy
| | - Luca Giannessi
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
- ENEA C.R. Frascati, 00044 Frascati (Roma), Italy
| | | | - Luka Novinec
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Nitish Pal
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Giuseppe Penco
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Oksana Plekan
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Kevin C Prince
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | | | | | - Carlo Spezzani
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Marco Zangrando
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
- Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche, 34149 Basovizza, Italy
| | - Jamal Berakdar
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099 Halle (Saale), Germany
| | - Raimund Feifel
- Department of Physics, University of Gothenburg, 41133 Gothenburg, Sweden
| | - Richard J Squibb
- Department of Physics, University of Gothenburg, 41133 Gothenburg, Sweden
| | - Ryan Coffee
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Erik Hemsing
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Eléonore Roussel
- Université de Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France
| | - Giuseppe Sansone
- Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, 79104 Freiburg, Germany
| | - Brian W J McNeil
- University of Strathclyde (SUPA), Glasgow G4 0NG, United Kingdom
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
- ASTeC, STFC Daresbury Laboratory, Warrington WA4 4AD, United Kingdom
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5
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Ganguly S, Gisselbrecht M, Eng-Johnsson P, Feifel R, Díaz-Tendero S, Muchová E, Milosavljević AR, Rousseau P, Maclot S. Resonant Inner-Shell Photofragmentation of Adamantane (C10H16). Molecules 2023; 28:5510. [PMID: 37513382 PMCID: PMC10384773 DOI: 10.3390/molecules28145510] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/10/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
Adamantane, the smallest diamondoid molecule with a symmetrical cage, contains two distinct carbon sites, CH and CH2. The ionization/excitation of the molecule leads to the cage opening and strong structural reorganization. While theoretical predictions suggest that the carbon site CH primarily causes the cage opening, the role of the other CH2 site remains unclear. In this study, we used advanced experimental Auger electron-ion coincidence techniques and theoretical calculations to investigate the fragmentation dynamics of adamantane after resonant inner-shell photoexcitation. Our results demonstrate that some fragmentation channels exhibit site-sensitivity of the initial core-hole location, indicating that different carbon site excitations could lead to unique cage opening mechanisms.
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Affiliation(s)
- Smita Ganguly
- Department of Physics, Lund University, 22100 Lund, Sweden
| | | | | | - Raimund Feifel
- Department of Physics, University of Gothenburg, Origovagen 6 B, 41296 Gothenburg, Sweden
| | - Sergio Díaz-Tendero
- Department of Chemistry, Universidad Autonoma de Madrid, 28049 Madrid, Spain
- Institute for Advanced Research in Chemistry (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Eva Muchová
- Department of Physical Chemistry, University of Chemistry and Technology, Technická 5, 166 28 Prague, Czech Republic
| | | | - Patrick Rousseau
- Normandie University, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, 14000 Caen, France
| | - Sylvain Maclot
- Department of Physics, University of Gothenburg, Origovagen 6 B, 41296 Gothenburg, Sweden
- Institut Lumiere Matiere UMR 5306, Universite Claude Bernard Lyon 1, CNRS, Univ. Lyon, 69100 Villeurbanne, France
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6
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Jarraya M, Wallner M, Ben Yaghlane S, Olsson E, Ideböhn V, Squibb RJ, Palaudoux J, Nyman G, Al-Mogren MM, Eland JHD, Feifel R, Hochlaf M. Doubly ionized OCS bond rearrangement upon fragmentation - experiment and theory. Phys Chem Chem Phys 2023. [PMID: 37435640 DOI: 10.1039/d3cp01688a] [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: 07/13/2023]
Abstract
The dissociation of OCS2+ ions formed by photoionization of the neutral molecule at 40.81 eV is examined using threefold and fourfold electron-ion coincidence spectroscopy combined with high level quantum chemical calculations on isomeric structures and their potential energy surfaces. The dominant dissociation channel of [OCS]2+ is charge separation forming CO+ + S+ ion pairs, found here to be formed with low intensity at a lower-energy onset and with a correspondingly smaller kinetic energy release than in the more intense higher energy channel previously reported. We explain the formation of CO+ + S+ ion pairs at low as well as higher ionization energies by the existence of two predissociation channels, one involving a newly identified COS2+ metastable state. We conclude that the dominant CO+ + S+ channel with 5.2 eV kinetic energy release is reached upon OCS2+ → COS2+ isomerization, whereas the smaller kinetic energy release (of ∼4 eV) results from the direct fragmentation of OCS2+ (X3Σ-) ions. Dissociation of the COS2+ isomer also explains the existence of the minor C+ + SO+ ion pair channel. We suggest that isomerization prior to dissociation may be a widespread mechanism in dications and more generally in multiply charged ion dissociations.
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Affiliation(s)
- Mahmoud Jarraya
- Université Gustave Eiffel, COSYS/IMSE, 5 Bd Descartes, 77454, Champs Sur Marne, France.
- LSAMA, Faculté des Sciences de Tunis, Université de Tunis El Manar, Tunis, 2092, Tunisia
- LCP-MR, Sorbonne Université - UMR 7614, 75231 Paris Cedex 05, France
| | - Måns Wallner
- Department of Physics, University of Gothenburg, 412 58 Gothenburg, Sweden.
| | - Saida Ben Yaghlane
- LSAMA, Faculté des Sciences de Tunis, Université de Tunis El Manar, Tunis, 2092, Tunisia
| | - Emelie Olsson
- Department of Physics, University of Gothenburg, 412 58 Gothenburg, Sweden.
| | - Veronica Ideböhn
- Department of Physics, University of Gothenburg, 412 58 Gothenburg, Sweden.
| | - Richard J Squibb
- Department of Physics, University of Gothenburg, 412 58 Gothenburg, Sweden.
| | - Jérôme Palaudoux
- LCP-MR, Sorbonne Université - UMR 7614, 75231 Paris Cedex 05, France
| | - Gunnar Nyman
- Department of Chemistry and Molecular Biology, University of Gothenburg, 405 30 Gothenburg, Sweden
| | - Muneerah Mogren Al-Mogren
- Department of Chemistry, College of Sciences, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia
| | - John H D Eland
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, Oxford, OX1 3QZ, UK.
| | - Raimund Feifel
- Department of Physics, University of Gothenburg, 412 58 Gothenburg, Sweden.
| | - Majdi Hochlaf
- Université Gustave Eiffel, COSYS/IMSE, 5 Bd Descartes, 77454, Champs Sur Marne, France.
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7
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Ideböhn V, Linguerri R, Cornetta LM, Olsson E, Wallner M, Squibb RJ, Couto RC, Karlsson L, Nyman G, Hochlaf M, Eland JHD, Ågren H, Feifel R. Symmetry breaking in core-valence double ionisation of allene. Commun Chem 2023; 6:137. [PMID: 37400533 DOI: 10.1038/s42004-023-00934-1] [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] [Received: 03/25/2023] [Accepted: 06/16/2023] [Indexed: 07/05/2023] Open
Abstract
Conventional electron spectroscopy is an established one-electron-at-the-time method for revealing the electronic structure and dynamics of either valence or inner shell ionized systems. By combining an electron-electron coincidence technique with the use of soft X-radiation we have measured a double ionisation spectrum of the allene molecule in which one electron is removed from a C1s core orbital and one from a valence orbital, well beyond Siegbahns Electron-Spectroscopy-for-Chemical-Analysis method. This core-valence double ionisation spectrum shows the effect of symmetry breaking in an extraordinary way, when the core electron is ejected from one of the two outer carbon atoms. To explain the spectrum we present a new theoretical approach combining the benefits of a full self-consistent field approach with those of perturbation methods and multi-configurational techniques, thus establishing a powerful tool to reveal molecular orbital symmetry breaking on such an organic molecule, going beyond Löwdins standard definition of electron correlation.
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Affiliation(s)
- Veronica Ideböhn
- University of Gothenburg, Department of Physics, Origovgen 6B, SE-412 58, Gothenburg, Sweden
| | - Roberto Linguerri
- Universite Gustave Eiffel, COSYS/IMSE, 5 Bd Descartes 77454, Champs sur Marne, France
| | - Lucas M Cornetta
- Uppsala University, Department of Physics and Astronomy, Box 516, SE-751 20, Uppsala, Sweden
- Department of Applied Physics, Gleb Wataghin Institute of Physics, State University of Campinas, Campinas, Brazil
| | - Emelie Olsson
- University of Gothenburg, Department of Physics, Origovgen 6B, SE-412 58, Gothenburg, Sweden
| | - Måns Wallner
- University of Gothenburg, Department of Physics, Origovgen 6B, SE-412 58, Gothenburg, Sweden
| | - Richard J Squibb
- University of Gothenburg, Department of Physics, Origovgen 6B, SE-412 58, Gothenburg, Sweden
| | - Rafael C Couto
- Division of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE-106 91, Stockholm, Sweden
| | - Leif Karlsson
- Uppsala University, Department of Physics and Astronomy, Box 516, SE-751 20, Uppsala, Sweden
| | - Gunnar Nyman
- University of Gothenburg, Department of Chemistry and Molecular Biology, Kemigården 4, SE-412 96, Gothenburg, Sweden
| | - Majdi Hochlaf
- Universite Gustave Eiffel, COSYS/IMSE, 5 Bd Descartes 77454, Champs sur Marne, France
| | - John H D Eland
- Oxford University, Department of Chemistry, Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford, OX1 3QZ, UK
| | - Hans Ågren
- Uppsala University, Department of Physics and Astronomy, Box 516, SE-751 20, Uppsala, Sweden
| | - Raimund Feifel
- University of Gothenburg, Department of Physics, Origovgen 6B, SE-412 58, Gothenburg, Sweden.
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8
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Feifel R, Hochlaf M, Price S. Ions, electrons, coincidences and dynamics. Phys Chem Chem Phys 2023; 25:5911-5912. [PMID: 36723103 DOI: 10.1039/d2cp90239g] [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: 02/01/2023]
Abstract
This themed collection includes a collection of articles on ions, electrons, coincidences and dynamics: Festschrift for John H. D. Eland.
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Affiliation(s)
- Raimund Feifel
- Department of Physics, University of Gothenburg, Origovägen 6 B, 41296 Gothenburg, Sweden.
| | - Majdi Hochlaf
- Université Gustave Eiffel, COSYS/IMSE, 5 Bd Descartes 77454, Champs sur Marne, France.
| | - Stephen Price
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK.
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9
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Travnikova O, Piteša T, Ponzi A, Sapunar M, Squibb RJ, Richter R, Finetti P, Di Fraia M, De Fanis A, Mahne N, Manfredda M, Zhaunerchyk V, Marchenko T, Guillemin R, Journel L, Prince KC, Callegari C, Simon M, Feifel R, Decleva P, Došlić N, Piancastelli MN. Photochemical Ring-Opening Reaction of 1,3-Cyclohexadiene: Identifying the True Reactive State. J Am Chem Soc 2022; 144:21878-21886. [PMID: 36444673 PMCID: PMC9732879 DOI: 10.1021/jacs.2c06296] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The photochemically induced ring-opening isomerization reaction of 1,3-cyclohexadiene to 1,3,5-hexatriene is a textbook example of a pericyclic reaction and has been amply investigated with advanced spectroscopic techniques. The main open question has been the identification of the single reactive state which drives the process. The generally accepted description of the isomerization pathway starts with a valence excitation to the lowest lying bright state, followed by a passage through a conical intersection to the lowest lying doubly excited state, and finally a branching between either the return to the ground state of the cyclic molecule or the actual ring-opening reaction leading to the open-chain isomer. Here, in a joint experimental and computational effort, we demonstrate that the evolution of the excitation-deexcitation process is much more complex than that usually described. In particular, we show that an initially high-lying electronic state smoothly decreasing in energy along the reaction path plays a key role in the ring-opening reaction.
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Affiliation(s)
- Oksana Travnikova
- Sorbonne
Université, CNRS, Laboratoire de Chimie Physique-Matière
et Rayonnement, LCPMR, ParisF-75005, France
| | | | - Aurora Ponzi
- Institut
Rud̵er Bošković, ZagrebHR-10000, Croatia
| | | | | | | | | | | | | | - Nicola Mahne
- IOM-CNR, S.S. 14 km 163.5 in Area Science
Park, Trieste34149, Italy
| | | | - Vitali Zhaunerchyk
- Department
of Physics, University of Gothenburg, GothenburgSE-412 96, Sweden
| | - Tatiana Marchenko
- Sorbonne
Université, CNRS, Laboratoire de Chimie Physique-Matière
et Rayonnement, LCPMR, ParisF-75005, France
| | - Renaud Guillemin
- Sorbonne
Université, CNRS, Laboratoire de Chimie Physique-Matière
et Rayonnement, LCPMR, ParisF-75005, France
| | - Loic Journel
- Sorbonne
Université, CNRS, Laboratoire de Chimie Physique-Matière
et Rayonnement, LCPMR, ParisF-75005, France
| | | | | | - Marc Simon
- Sorbonne
Université, CNRS, Laboratoire de Chimie Physique-Matière
et Rayonnement, LCPMR, ParisF-75005, France
| | - Raimund Feifel
- Department
of Physics, University of Gothenburg, GothenburgSE-412 96, Sweden
| | - Piero Decleva
- Dipartimento
di Scienze Chimiche e Farmaceutiche, Universitá
di Trieste, TriesteI-34127, Italy
| | - Nad̵a Došlić
- Institut
Rud̵er Bošković, ZagrebHR-10000, Croatia,
| | - Maria Novella Piancastelli
- Sorbonne
Université, CNRS, Laboratoire de Chimie Physique-Matière
et Rayonnement, LCPMR, ParisF-75005, France,Department
of Physics and Astronomy, Uppsala University, UppsalaSE-751 20, Sweden,
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10
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Uhl D, Wituschek A, Michiels R, Trinter F, Jahnke T, Allaria E, Callegari C, Danailov M, Di Fraia M, Plekan O, Bangert U, Dulitz K, Landmesser F, Michelbach M, Simoncig A, Manfredda M, Spampinati S, Penco G, Squibb RJ, Feifel R, Laarmann T, Mudrich M, Prince KC, Cerullo G, Giannessi L, Stienkemeier F, Bruder L. Extreme Ultraviolet Wave Packet Interferometry of the Autoionizing HeNe Dimer. J Phys Chem Lett 2022; 13:8470-8476. [PMID: 36054027 PMCID: PMC9486932 DOI: 10.1021/acs.jpclett.2c01619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
Femtosecond extreme ultraviolet wave packet interferometry (XUV-WPI) was applied to study resonant interatomic Coulombic decay (ICD) in the HeNe dimer. The high demands on phase stability and sensitivity for vibronic XUV-WPI of molecular-beam targets are met using an XUV phase-cycling scheme. The detected quantum interferences exhibit vibronic dephasing and rephasing signatures along with an ultrafast decoherence assigned to the ICD process. A Fourier analysis reveals the molecular absorption spectrum with high resolution. The demonstrated experiment shows a promising route for the real-time analysis of ultrafast ICD processes with both high temporal and high spectral resolution.
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Affiliation(s)
- Daniel Uhl
- Institute
of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - Andreas Wituschek
- Institute
of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - Rupert Michiels
- Institute
of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - Florian Trinter
- Institut
für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main, Germany
- Molecular
Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Till Jahnke
- Institut
für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main, Germany
- European
XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Enrico Allaria
- Elettra-Sincrotrone
Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy
| | - Carlo Callegari
- Elettra-Sincrotrone
Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy
| | - Miltcho Danailov
- Elettra-Sincrotrone
Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy
| | - Michele Di Fraia
- Elettra-Sincrotrone
Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy
| | - Oksana Plekan
- Elettra-Sincrotrone
Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy
| | - Ulrich Bangert
- Institute
of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - Katrin Dulitz
- Institute
of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - Friedemann Landmesser
- Institute
of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - Moritz Michelbach
- Institute
of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - Alberto Simoncig
- Elettra-Sincrotrone
Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy
| | - Michele Manfredda
- Elettra-Sincrotrone
Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy
| | - Simone Spampinati
- Elettra-Sincrotrone
Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy
| | - Giuseppe Penco
- Elettra-Sincrotrone
Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy
| | - Richard James Squibb
- Department
of Physics, University of Gothenburg, Origovägen 6 B, 41296 Gothenburg, Sweden
| | - Raimund Feifel
- Department
of Physics, University of Gothenburg, Origovägen 6 B, 41296 Gothenburg, Sweden
| | - Tim Laarmann
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
- The Hamburg
Centre for Ultrafast Imaging CUI, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Marcel Mudrich
- Department
of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus, Denmark
| | - Kevin C. Prince
- Elettra-Sincrotrone
Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy
| | - Giulio Cerullo
- IFN-CNR
and Dipartimento di Fisica, Politecnico
di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy
| | - Luca Giannessi
- Elettra-Sincrotrone
Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy
- Istituto
Nazionale di Fisica Nucleare, Laboratori
Nazionali di Frascati, Via E. Fermi 40, 00044 Frascati, Roma
| | - Frank Stienkemeier
- Institute
of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - Lukas Bruder
- Institute
of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
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11
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Wallner M, Jarraya M, Olsson E, Ideböhn V, Squibb RJ, Ben Yaghlane S, Nyman G, Eland JH, Feifel R, Hochlaf M. Abiotic molecular oxygen production-Ionic pathway from sulfur dioxide. Sci Adv 2022; 8:eabq5411. [PMID: 35984889 PMCID: PMC9390983 DOI: 10.1126/sciadv.abq5411] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
Molecular oxygen, O2, is vital to life on Earth and possibly also on exoplanets. Although the biogenic processes leading to its accumulation in Earth's atmosphere are well understood, its abiotic origin is still not fully established. Here, we report combined experimental and theoretical evidence for electronic state-selective production of O2 from SO2, a chemical constituent of many planetary atmospheres and one that played an important part on Earth in the Great Oxidation Event. The O2 production involves dissociative double ionization of SO2 leading to efficient formation of the [Formula: see text] ion, which can be converted to abiotic O2 by electron neutralization or by charge exchange. This formation process may contribute substantially to the abundance of O2 and related ions in planetary atmospheres, such as the Jovian moons Io, Europa, and Ganymede. We suggest that this sort of ionic pathway for the formation of abiotic O2 involving multiply charged molecular ion decomposition may also exist for other atmospheric and planetary molecules.
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Affiliation(s)
- Måns Wallner
- University of Gothenburg, Department of Physics, Origovägen 6B, 412 58 Gothenburg, Sweden
| | - Mahmoud Jarraya
- Université de Tunis El Manar, Faculté des Sciences de Tunis, Laboratoire de Spectroscopie Atomique, Moléculaire et Applications—LSAMA, 2092 Tunis, Tunisia
- Université Gustave Eiffel, COSYS/IMSE, 5 Bd Descartes, 77454 Champs sur Marne, France
| | - Emelie Olsson
- University of Gothenburg, Department of Physics, Origovägen 6B, 412 58 Gothenburg, Sweden
| | - Veronica Ideböhn
- University of Gothenburg, Department of Physics, Origovägen 6B, 412 58 Gothenburg, Sweden
| | - Richard J. Squibb
- University of Gothenburg, Department of Physics, Origovägen 6B, 412 58 Gothenburg, Sweden
| | - Saida Ben Yaghlane
- Université de Tunis El Manar, Faculté des Sciences de Tunis, Laboratoire de Spectroscopie Atomique, Moléculaire et Applications—LSAMA, 2092 Tunis, Tunisia
| | - Gunnar Nyman
- University of Gothenburg, Department of Chemistry and Molecular Biology, Kemigården 4, 412 96 Gothenburg, Sweden
| | - John H.D. Eland
- Oxford University, Department of Chemistry, Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford OX1 3QZ, UK
| | - Raimund Feifel
- University of Gothenburg, Department of Physics, Origovägen 6B, 412 58 Gothenburg, Sweden
| | - Majdi Hochlaf
- Université Gustave Eiffel, COSYS/IMSE, 5 Bd Descartes, 77454 Champs sur Marne, France
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12
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Nandi S, Olofsson E, Bertolino M, Carlström S, Zapata F, Busto D, Callegari C, Di Fraia M, Eng-Johnsson P, Feifel R, Gallician G, Gisselbrecht M, Maclot S, Neoričić L, Peschel J, Plekan O, Prince KC, Squibb RJ, Zhong S, Demekhin PV, Meyer M, Miron C, Badano L, Danailov MB, Giannessi L, Manfredda M, Sottocorona F, Zangrando M, Dahlström JM. Observation of Rabi dynamics with a short-wavelength free-electron laser. Nature 2022; 608:488-493. [PMID: 35978126 PMCID: PMC9385478 DOI: 10.1038/s41586-022-04948-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 06/08/2022] [Indexed: 11/29/2022]
Abstract
Rabi oscillations are periodic modulations of populations in two-level systems interacting with a time-varying field1. They are ubiquitous in physics with applications in different areas such as photonics2, nano-electronics3, electron microscopy4 and quantum information5. While the theory developed by Rabi was intended for fermions in gyrating magnetic fields, Autler and Townes realized that it could also be used to describe coherent light-matter interactions within the rotating-wave approximation6. Although intense nanometre-wavelength light sources have been available for more than a decade7-9, Rabi dynamics at such short wavelengths has not been directly observed. Here we show that femtosecond extreme-ultraviolet pulses from a seeded free-electron laser10 can drive Rabi dynamics between the ground state and an excited state in helium atoms. The measured photoelectron signal reveals an Autler-Townes doublet and an avoided crossing, phenomena that are both fundamental to coherent atom-field interactions11. Using an analytical model derived from perturbation theory on top of the Rabi model, we find that the ultrafast build-up of the doublet structure carries the signature of a quantum interference effect between resonant and non-resonant photoionization pathways. Given the recent availability of intense attosecond12 and few-femtosecond13 extreme-ultraviolet pulses, our results unfold opportunities to carry out ultrafast manipulation of coherent processes at short wavelengths using free-electron lasers.
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Affiliation(s)
- Saikat Nandi
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, Villeurbanne, France.
| | | | | | | | - Felipe Zapata
- Department of Physics, Lund University, Lund, Sweden
| | - David Busto
- Department of Physics, Lund University, Lund, Sweden
| | | | | | | | - Raimund Feifel
- Department of Physics, University of Gothenburg, Gothenburg, Sweden
| | | | | | - Sylvain Maclot
- Department of Physics, Lund University, Lund, Sweden
- Department of Physics, University of Gothenburg, Gothenburg, Sweden
| | - Lana Neoričić
- Department of Physics, Lund University, Lund, Sweden
| | | | | | | | - Richard J Squibb
- Department of Physics, University of Gothenburg, Gothenburg, Sweden
| | - Shiyang Zhong
- Department of Physics, Lund University, Lund, Sweden
| | | | | | - Catalin Miron
- Université Paris-Saclay, CEA, CNRS, LIDYL, Gif-sur-Yvette, France
- ELI-NP, "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Magurele, Romania
| | | | | | - Luca Giannessi
- Elettra-Sincrotrone Trieste, Trieste, Italy
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, Frascati, Italy
| | | | - Filippo Sottocorona
- Elettra-Sincrotrone Trieste, Trieste, Italy
- Università degli Studi di Trieste, Trieste, Italy
| | - Marco Zangrando
- Elettra-Sincrotrone Trieste, Trieste, Italy
- IOM-CNR, Istituto Officina dei Materiali, Trieste, Italy
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13
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Koulentianos D, Carravetta V, Couto RC, Andersson J, Hult Roos A, Squibb RJ, Wallner M, Eland JHD, Simon M, Ågren H, Feifel R. Formation and relaxation of K −2 and K −2V double-core-hole states in n-butane. J Chem Phys 2022; 157:044306. [DOI: 10.1063/1.5135388] [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: 11/14/2022] Open
Abstract
Using a magnetic bottle multi-electron time-of-flight spectrometer in combination with synchrotron radiation, double-core-hole pre-edge and continuum states involving the K-shell of the carbon atoms in n-butane ( n-C4H10) have been identified, where the ejected core electron(s) and the emitted Auger electrons from the decay of such states have been detected in coincidence. An assignment of the main observed spectral features is based on the results of multi-configurational self-consistent field (MCSCF) calculations for the excitation energies and static exchange (STEX) calculations for energies and intensities. MCSCF results have been analyzed in terms of static and dynamic electron relaxation as well as electron correlation contributions to double-core-hole state ionization potentials. The analysis of applicability of the STEX method, which implements the one-particle picture toward the complete basis set limit, is motivated by the fact that it scales well toward large species. We find that combining the MCSCF and STEX techniques is a viable approach to analyze double-core-hole spectra.
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Affiliation(s)
- D. Koulentianos
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
- Laboratoire de Chimie Physique-Matière et Rayonnement, CNRS, Sorbonne Université, Cedex 05, F-75005 Paris, France
| | - V. Carravetta
- Institute of Chemical Physical Processes - CNR, via Moruzzi 1, 56124 Pisa, Italy
| | - R. C. Couto
- Department of Chemistry-Ångström, Uppsala University, Box 538, SE-751 21 Uppsala, Sweden
| | - J. Andersson
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
| | - A. Hult Roos
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
| | - R. J. Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
| | - M. Wallner
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
| | - J. H. D. Eland
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, Oxford University, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - M. Simon
- Laboratoire de Chimie Physique-Matière et Rayonnement, CNRS, Sorbonne Université, Cedex 05, F-75005 Paris, France
| | - H. Ågren
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, People’s Republic of China
| | - R. Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
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14
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Olsson E, Ayari T, Ideböhn V, Wallner M, Squibb RJ, Andersson J, Roos AH, Stranges S, Dyke JM, Eland JHD, Hochlaf M, Feifel R. An experimental and theoretical characterization of the electronic structure of doubly ionised disulfur. Sci Rep 2022; 12:12236. [PMID: 35851404 PMCID: PMC9293938 DOI: 10.1038/s41598-022-16327-8] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 07/08/2022] [Indexed: 12/05/2022] Open
Abstract
Using time-of-flight multiple electron and ion coincidence techniques in combination with a helium gas discharge lamp and synchrotron radiation, the double ionisation spectrum of disulfur (S\documentclass[12pt]{minimal}
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\begin{document}$$_2$$\end{document}2) and the subsequent fragmentation dynamics of its dication are investigated. The S\documentclass[12pt]{minimal}
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\begin{document}$$_2$$\end{document}2 sample was produced by heating mercury sulfide (HgS), whose vapour at a suitably chosen temperature consists primarily of two constituents: S\documentclass[12pt]{minimal}
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\begin{document}$$_2$$\end{document}2 and atomic Hg. A multi-particle-coincidence technique is thus particularly useful for retrieving spectra of S\documentclass[12pt]{minimal}
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\begin{document}$$_2$$\end{document}2 from ionisation of the mixed vapour. The results obtained are compared with detailed calculations of the electronic structure and potential energy curves of S\documentclass[12pt]{minimal}
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\begin{document}$$_2^{2+}$$\end{document}22+ which are also presented. These computations are carried out using configuration interaction methodology. The experimental results are interpreted with and strongly supported by the computational results.
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Affiliation(s)
- Emelie Olsson
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - Tarek Ayari
- Université Gustave Eiffel, COSYS/IMSE, 5 Bd Descartes, 77454, Champs sur Marne, France
| | - Veronica Ideböhn
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - Måns Wallner
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - Richard J Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - Jonas Andersson
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - Andreas Hult Roos
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden.,ELI Beamlines, Institute of Physics AS CR, v.v.i., Na Slovance 2, 182 21, Prague 8, Czech Republic
| | - Stefano Stranges
- IOM-CNR Tasc, SS-14, Km 163.5 Area Science Park Basovizza, 34149, Trieste, Italy.,Dipartimento di Chimica e Tecnologie del Farmaco, Universitá Sapienza, 00185, Rome, Italy
| | - John M Dyke
- School of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, UK
| | - John H D Eland
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, UK
| | - Majdi Hochlaf
- Université Gustave Eiffel, COSYS/IMSE, 5 Bd Descartes, 77454, Champs sur Marne, France.
| | - Raimund Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden.
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15
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Asmussen JD, Michiels R, Bangert U, Sisourat N, Binz M, Bruder L, Danailov M, Di Fraia M, Feifel R, Giannessi L, Plekan O, Prince KC, Squibb RJ, Uhl D, Wituschek A, Zangrando M, Callegari C, Stienkemeier F, Mudrich M. Time-Resolved Ultrafast Interatomic Coulombic Decay in Superexcited Sodium-Doped Helium Nanodroplets. J Phys Chem Lett 2022; 13:4470-4478. [PMID: 35561339 DOI: 10.1021/acs.jpclett.2c00645] [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: 06/15/2023]
Abstract
The autoionization dynamics of superexcited superfluid He nanodroplets doped with Na atoms is studied by extreme-ultraviolet (XUV) time-resolved electron spectroscopy. Following excitation into the higher-lying droplet absorption band, the droplet relaxes into the lowest metastable atomic 1s2s 1,3S states from which interatomic Coulombic decay (ICD) takes place either between two excited He atoms or between an excited He atom and a Na atom attached to the droplet surface. Four main ICD channels are identified, and their decay times are determined by varying the delay between the XUV pulse and a UV pulse that ionizes the initial excited state and thereby quenches ICD. The decay times for the different channels all fall in the range of ∼1 ps, indicating that the ICD dynamics are mainly determined by the droplet environment. A periodic modulation of the transient ICD signals is tentatively attributed to the oscillation of the bubble forming around the localized He excitation.
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Affiliation(s)
- Jakob D Asmussen
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
| | - Rupert Michiels
- Institute of Physics, University of Freiburg, 79104 Freiburg im Breisgau, Germany
| | - Ulrich Bangert
- Institute of Physics, University of Freiburg, 79104 Freiburg im Breisgau, Germany
| | - Nicolas Sisourat
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique Matière et Rayonnement, 75005 Paris, France
| | - Marcel Binz
- Institute of Physics, University of Freiburg, 79104 Freiburg im Breisgau, Germany
| | - Lukas Bruder
- Institute of Physics, University of Freiburg, 79104 Freiburg im Breisgau, Germany
| | | | | | - Raimund Feifel
- Department of Physics, University of Gothenburg, 41133 Gothenburg, Sweden
| | - Luca Giannessi
- Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza TS, Italy
| | - Oksana Plekan
- Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza TS, Italy
| | - Kevin C Prince
- Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza TS, Italy
| | - Richard J Squibb
- Department of Physics, University of Gothenburg, 41133 Gothenburg, Sweden
| | - Daniel Uhl
- Institute of Physics, University of Freiburg, 79104 Freiburg im Breisgau, Germany
| | - Andreas Wituschek
- Institute of Physics, University of Freiburg, 79104 Freiburg im Breisgau, Germany
| | - Marco Zangrando
- Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza TS, Italy
| | - Carlo Callegari
- Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza TS, Italy
| | - Frank Stienkemeier
- Institute of Physics, University of Freiburg, 79104 Freiburg im Breisgau, Germany
| | - Marcel Mudrich
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
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16
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Mayer D, Lever F, Picconi D, Metje J, Alisauskas S, Calegari F, Düsterer S, Ehlert C, Feifel R, Niebuhr M, Manschwetus B, Kuhlmann M, Mazza T, Robinson MS, Squibb RJ, Trabattoni A, Wallner M, Saalfrank P, Wolf TJA, Gühr M. Publisher Correction: Following excited-state chemical shifts in molecular ultrafast x-ray photoelectron spectroscopy. Nat Commun 2022; 13:1356. [PMID: 35264572 PMCID: PMC8907161 DOI: 10.1038/s41467-022-28584-2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Affiliation(s)
- D Mayer
- Institut für Physik und Astronomie, Universität Potsdam, 14476, Potsdam, Germany
| | - F Lever
- Institut für Physik und Astronomie, Universität Potsdam, 14476, Potsdam, Germany
| | - D Picconi
- Institut für Chemie, Universität Potsdam, 14476, Potsdam, Germany.
| | - J Metje
- Institut für Physik und Astronomie, Universität Potsdam, 14476, Potsdam, Germany
| | - S Alisauskas
- Deutsches Elektronen Synchrotron (DESY), 22607, Hamburg, Germany
| | - F Calegari
- Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen Synchrotron (DESY), 22607, Hamburg, Germany.,The Hamburg Centre for Ultrafast Imaging, Universität Hamburg, 22761, Hamburg, Germany.,Institut für Experimentalphysik, Universität Hamburg, 22761, Hamburg, Germany
| | - S Düsterer
- Deutsches Elektronen Synchrotron (DESY), 22607, Hamburg, Germany
| | - C Ehlert
- Heidelberg Institute for Theoretical Studies, HITS gGmbH, 69118, Heidelberg, Germany
| | - R Feifel
- Department of Physics, University of Gothenburg, SE-41296, Gothenburg, Sweden
| | - M Niebuhr
- Institut für Physik und Astronomie, Universität Potsdam, 14476, Potsdam, Germany
| | - B Manschwetus
- Deutsches Elektronen Synchrotron (DESY), 22607, Hamburg, Germany
| | - M Kuhlmann
- Deutsches Elektronen Synchrotron (DESY), 22607, Hamburg, Germany
| | - T Mazza
- European XFEL, 22869, Schenefeld, Germany
| | - M S Robinson
- Institut für Physik und Astronomie, Universität Potsdam, 14476, Potsdam, Germany.,Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen Synchrotron (DESY), 22607, Hamburg, Germany.,The Hamburg Centre for Ultrafast Imaging, Universität Hamburg, 22761, Hamburg, Germany
| | - R J Squibb
- Department of Physics, University of Gothenburg, SE-41296, Gothenburg, Sweden
| | - A Trabattoni
- Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen Synchrotron (DESY), 22607, Hamburg, Germany
| | - M Wallner
- Department of Physics, University of Gothenburg, SE-41296, Gothenburg, Sweden
| | - P Saalfrank
- Institut für Chemie, Universität Potsdam, 14476, Potsdam, Germany
| | - T J A Wolf
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - M Gühr
- Institut für Physik und Astronomie, Universität Potsdam, 14476, Potsdam, Germany.
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17
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Ideböhn V, Sterling AJ, Wallner M, Olsson E, Squibb RJ, Miniotaite U, Forsmalm E, Forsmalm M, Stranges S, Dyke JM, Duarte F, Eland JHD, Feifel R. Single photon double and triple ionization of allene. Phys Chem Chem Phys 2022; 24:786-796. [PMID: 34927639 DOI: 10.1039/d1cp04666g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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
Double and triple ionization of allene are investigated using electron-electron, ion-ion, electron-electron-ion and electron-electron-ion-ion (ee, ii, eei, eeii) coincidence spectroscopies at selected photon energies. The results provide supporting evidence for a previously proposed roaming mechanism in H3+ formation by double ionization. The lowest vertical double ionization energy is found to be 27.9 eV, while adiabatic double ionization is not accessed by vertical ionization at the neutral geometry. The triple ionization energy is found to be close to 50 eV in agreement with theoretical predictions. The doubly charged parent ion is stable up to about 2 eV above the threshold, after which dissociations by charge separation and by double charge retention occur with comparable intensities. Fragmentation to H+ + C3H3+ starts immediately above the threshold as a slow (metastable) decay with 130.5 ± 9.9 ns mean lifetime.
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Affiliation(s)
- Veronica Ideböhn
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58 Gothenburg, Sweden.
| | - Alistair J Sterling
- Department of Chemistry, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, UK
| | - Måns Wallner
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58 Gothenburg, Sweden.
| | - Emelie Olsson
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58 Gothenburg, Sweden.
| | - Richard J Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58 Gothenburg, Sweden.
| | - Ugne Miniotaite
- Department of Physics, Chalmers University of Technology, Kemigården 1, 412 96 Gothenburg, Sweden
| | - Emma Forsmalm
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58 Gothenburg, Sweden.
| | - Malin Forsmalm
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58 Gothenburg, Sweden.
| | - Stefano Stranges
- IOM-CNR Tasc, SS-14, Km 163.5 Area Science Park, Basovizza 34149, Trieste, Italy.,Dipartimento di Chimica e Tecnologie del Farmaco, Universitá Sapienza, Rome I-00185, Italy
| | - John M Dyke
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK
| | - Fernanda Duarte
- Department of Chemistry, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, UK
| | - John H D Eland
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, UK
| | - Raimund Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58 Gothenburg, Sweden.
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18
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Ganguly S, Gisselbrecht M, Eng-Johnsson P, Feifel R, Hervieux PA, Alfaytarouni Z, Fink RF, Díaz-Tendero S, Milosavljevic A, Rousseau P, Maclot S. Coincidence study of core-ionized adamantane: Site-sensitivity within a carbon cage? Phys Chem Chem Phys 2022; 24:28994-29003. [DOI: 10.1039/d2cp04426a] [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: 11/18/2022]
Abstract
We investigate the fragmentation dynamics of adamantane dications produced after core-ionization at the carbon edge followed by Auger decay. The combination of high-resolution electron spectroscopy, energy-resolved electron-ion multi-coincidence spectroscopy and...
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19
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Abstract
![]()
The dissociations
of nascent Fe(CO)5++ ions
created by 40.81 eV photoionization of iron pentacarbonyl have been
examined using threefold and fourfold electron–ion coincidence
measurements. The energies and forms of the ions have been explored
by high-level calculations, revealing several new structures. The
most stable form of Fe(CO)5++ has a quite different
geometry from that of the neutral molecule. The dissociation pattern
can be modeled as a sequence of CO evaporations followed by two-body
charge separations. Each Fe(CO)n++ (n = 1–4) dication is stable in a restricted
energy range; as its internal energy increases, it first ejects a
neutral CO, then loses CO+ by charge separation at higher
energy. In the initial stages, charge-retaining CO evaporations dominate
over charge separation, but the latter become more competitive as
the number of residual CO ligands decreases. At energies where ionization
is mainly from the CO ligands, new Fe–C and C–C bonds
are created by a mechanism which might be relevant to catalysis by
Fe. Dissociations of nascent Fe(CO)5++ ions by sequential CO evaporations, leading (in restricted
energy
ranges) to stable Fe(CO)n++ (n = 1−4) dicationic species. At energies
where ionization is mainly from the CO ligands, new Fe−C and
C−C bonds are created by a mechanism which might be relevant
to catalysis by Fe.
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Affiliation(s)
- Roberto Linguerri
- COSYS/LISIS, Université Gustave Eiffel, 5 Bd Descartes, 77454, Champs sur Marne, France
| | - Emelie Olsson
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58 Gothenburg, Sweden
| | - Gunnar Nyman
- Department of Chemistry and Molecular Biology, University of Gothenburg, 405 30 Gothenburg, Sweden
| | - Majdi Hochlaf
- COSYS/LISIS, Université Gustave Eiffel, 5 Bd Descartes, 77454, Champs sur Marne, France
| | - John H D Eland
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, OX1 3QZ Oxford, U.K
| | - Raimund Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58 Gothenburg, Sweden
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20
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Laamiri K, Garcia GA, Nahon L, Ben Houria A, Feifel R, Hochlaf M. Threshold photoelectron spectroscopy of 9-methyladenine: theory and experiment. Phys Chem Chem Phys 2021; 24:3523-3531. [PMID: 34676858 DOI: 10.1039/d1cp03729c] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We present a combined experimental and theoretical study of single-photon ionization of 9-methyladenine (9MA) in the gas phase. In addition to tautomerism, several rotamers due to the rotation of the methyl group may exist. Computations show, however, that solely one rotamer contributes because of low population in the molecular beam and/or unfavorable Franck-Condon factors upon ionization. Experimentally, we used VUV radiation available at the DESIRS beamline of the synchrotron radiation facility SOLEIL to record the threshold photoelectron spectrum of this molecule between 8 and 11 eV. This spectrum consists of a well-resolved band assigned mainly to vibronic levels of the D0 cationic state, plus a contribution from the D1 state, and two large bands corresponding to the D1, D2 and D3 electronically excited states. The adiabatic ionization energy of 9MA is measured at 8.097 ± 0.005 eV in close agreement with the computed value using the explicitly correlated coupled cluster approach including core valence, scalar relativistic and zero-point vibrational energy corrections. This work sheds light on the complex pattern of the lowest doublet electronic states of 9MA+. The comparison to canonical adenine reveals that methylation induces further electronic structure complication that may be important to understand the effects of ionizing radiation and the charge distribution in these biological entities at different time scales.
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Affiliation(s)
- K Laamiri
- Université Gustave Eiffel, COSYS/LISIS, 5 Bd Descartes 77454, Champs-sur-Marne, France. .,Laboratoire de Spectroscopie Atomique, Moléculaire et Applications - LSAMA, Université de Tunis El Manar, Tunis, Tunisia
| | - G A Garcia
- Synchrotron SOLEIL, L'orme des Merisiers, Saint-Aubin - BP 48 - 91192 Gif-sur-Yvette Cedex, France
| | - L Nahon
- Synchrotron SOLEIL, L'orme des Merisiers, Saint-Aubin - BP 48 - 91192 Gif-sur-Yvette Cedex, France
| | - A Ben Houria
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications - LSAMA, Université de Tunis El Manar, Tunis, Tunisia
| | - R Feifel
- University of Gothenburg, Department of Physics, 412 58 Gothenburg, Sweden
| | - M Hochlaf
- Université Gustave Eiffel, COSYS/LISIS, 5 Bd Descartes 77454, Champs-sur-Marne, France.
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21
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Michiels R, Abu-Samha M, Madsen LB, Binz M, Bangert U, Bruder L, Duim R, Wituschek A, LaForge AC, Squibb RJ, Feifel R, Callegari C, Di Fraia M, Danailov M, Manfredda M, Plekan O, Prince KC, Rebernik P, Zangrando M, Stienkemeier F, Mudrich M. Enhancement of Above Threshold Ionization in Resonantly Excited Helium Nanodroplets. Phys Rev Lett 2021; 127:093201. [PMID: 34506185 DOI: 10.1103/physrevlett.127.093201] [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: 03/16/2021] [Revised: 06/05/2021] [Accepted: 07/15/2021] [Indexed: 06/13/2023]
Abstract
Clusters and nanodroplets hold the promise of enhancing high-order nonlinear optical effects due to their high local density. However, only moderate enhancement has been demonstrated to date. Here, we report the observation of energetic electrons generated by above-threshold ionization (ATI) of helium (He) nanodroplets which are resonantly excited by ultrashort extreme ultraviolet (XUV) free-electron laser pulses and subsequently ionized by near-infrared (NIR) or near-ultraviolet (UV) pulses. The electron emission due to high-order ATI is enhanced by several orders of magnitude compared with He atoms. The crucial dependence of the ATI intensities with the number of excitations in the droplets suggests a local collective enhancement effect.
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Affiliation(s)
- R Michiels
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - M Abu-Samha
- College of Engineering and Technology, American University of the Middle East, Egaila, Kuwait
| | - L B Madsen
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
| | - M Binz
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - U Bangert
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - L Bruder
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - R Duim
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - A Wituschek
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - A C LaForge
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
| | - R J Squibb
- Department of Physics, University of Gothenburg, 41296 Gothenburg, Sweden
| | - R Feifel
- Department of Physics, University of Gothenburg, 41296 Gothenburg, Sweden
| | - C Callegari
- Elettra-Sincrotrone Trieste S.C.p.A, 34149 Basovizza, Trieste, Italy
| | - M Di Fraia
- Elettra-Sincrotrone Trieste S.C.p.A, 34149 Basovizza, Trieste, Italy
| | - M Danailov
- Elettra-Sincrotrone Trieste S.C.p.A, 34149 Basovizza, Trieste, Italy
| | - M Manfredda
- Elettra-Sincrotrone Trieste S.C.p.A, 34149 Basovizza, Trieste, Italy
| | - O Plekan
- Elettra-Sincrotrone Trieste S.C.p.A, 34149 Basovizza, Trieste, Italy
| | - K C Prince
- Elettra-Sincrotrone Trieste S.C.p.A, 34149 Basovizza, Trieste, Italy
| | - P Rebernik
- Elettra-Sincrotrone Trieste S.C.p.A, 34149 Basovizza, Trieste, Italy
| | - M Zangrando
- Elettra-Sincrotrone Trieste S.C.p.A, 34149 Basovizza, Trieste, Italy
- IOM-CNR, 34149 Trieste, Italy
| | - F Stienkemeier
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - M Mudrich
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
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22
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Jarraya M, Wallner M, Nyman G, Yaghlane SB, Hochlaf M, Eland JHD, Feifel R. State selective fragmentation of doubly ionized sulphur dioxide. Sci Rep 2021; 11:17137. [PMID: 34429456 PMCID: PMC8384974 DOI: 10.1038/s41598-021-96405-5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 08/09/2021] [Indexed: 12/03/2022] Open
Abstract
Using multi-electron–ion coincidence measurements combined with high level calculations, we show that double ionisation of SO2 at 40.81 eV can be state selective. It leads to high energy products, in good yield, via a newly identified mechanism, which is likely to apply widely to multiple ionisation by almost all impact processes.
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Affiliation(s)
- M Jarraya
- Université Gustave Eiffel, COSYS/LISIS, 5 Bd Descartes, 77454, Champs sur Marne, France.,Laboratoire de Spectroscopie Atomique, Moléculaire et Applications - LSAMA, Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092, Tunis, Tunisia
| | - M Wallner
- Department of Physics, University of Gothenburg, 412 58, Gothenburg, Sweden
| | - G Nyman
- Department of Chemistry and Molecular Biology, University of Gothenburg, 405 30, Gothenburg, Sweden
| | - S Ben Yaghlane
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications - LSAMA, Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092, Tunis, Tunisia
| | - M Hochlaf
- Université Gustave Eiffel, COSYS/LISIS, 5 Bd Descartes, 77454, Champs sur Marne, France.
| | - J H D Eland
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, UK
| | - R Feifel
- Department of Physics, University of Gothenburg, 412 58, Gothenburg, Sweden.
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23
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Asmussen JD, Michiels R, Dulitz K, Ngai A, Bangert U, Barranco M, Binz M, Bruder L, Danailov M, Di Fraia M, Eloranta J, Feifel R, Giannessi L, Pi M, Plekan O, Prince KC, Squibb RJ, Uhl D, Wituschek A, Zangrando M, Callegari C, Stienkemeier F, Mudrich M. Unravelling the full relaxation dynamics of superexcited helium nanodroplets. Phys Chem Chem Phys 2021; 23:15138-15149. [PMID: 34259254 DOI: 10.1039/d1cp01041g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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 relaxation dynamics of superexcited superfluid He nanodroplets is thoroughly investigated by means of extreme-ultraviolet (XUV) femtosecond electron and ion spectroscopy complemented by time-dependent density functional theory (TDDFT). Three main paths leading to the emission of electrons and ions are identified: droplet autoionization, pump-probe photoionization, and autoionization induced by re-excitation of droplets relaxing into levels below the droplet ionization threshold. The most abundant product ions are He2+, generated by droplet autoionization and by photoionization of droplet-bound excited He atoms. He+ appear with some pump-probe delay as a result of the ejection He atoms in their lowest excited states from the droplets. The state-resolved time-dependent photoelectron spectra reveal that intermediate excited states of the droplets are populated in the course of the relaxation, terminating in the lowest-lying metastable singlet and triplet He atomic states. The slightly faster relaxation of the triplet state compared to the singlet state is in agreement with the simulation showing faster formation of a bubble around a He atom in the triplet state.
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Affiliation(s)
- Jakob D Asmussen
- Department of Physics and Astronomy, Aarhus University, Denmark.
| | | | - Katrin Dulitz
- Institute of Physics, University of Freiburg, Germany
| | - Aaron Ngai
- Institute of Physics, University of Freiburg, Germany
| | | | - Manuel Barranco
- Departament FQA, Facultat de Física, Universitat de Barcelona, Spain and Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, Spain
| | - Marcel Binz
- Institute of Physics, University of Freiburg, Germany
| | - Lukas Bruder
- Institute of Physics, University of Freiburg, Germany
| | | | | | - Jussi Eloranta
- Department of Chemistry and Biochemistry, California State University at Northridge, Northridge, CA 91330, USA
| | | | - Luca Giannessi
- Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, Spain
| | - Marti Pi
- Departament FQA, Facultat de Física, Universitat de Barcelona, Spain and Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, Spain
| | - Oksana Plekan
- Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, Spain
| | - Kevin C Prince
- Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, Spain
| | | | - Daniel Uhl
- Institute of Physics, University of Freiburg, Germany
| | | | - Marco Zangrando
- Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, Spain and CNR-IOM, Elettra-Sincrotrone Trieste S.C.p.A., Italy
| | - Carlo Callegari
- Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, Spain
| | | | - Marcel Mudrich
- Department of Physics and Astronomy, Aarhus University, Denmark.
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24
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Wolf TJA, Paul AC, Folkestad SD, Myhre RH, Cryan JP, Berrah N, Bucksbaum PH, Coriani S, Coslovich G, Feifel R, Martinez TJ, Moeller SP, Mucke M, Obaid R, Plekan O, Squibb RJ, Koch H, Gühr M. Transient resonant Auger-Meitner spectra of photoexcited thymine. Faraday Discuss 2021; 228:555-570. [PMID: 33566045 DOI: 10.1039/d0fd00112k] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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
We present the first investigation of excited state dynamics by resonant Auger-Meitner spectroscopy (also known as resonant Auger spectroscopy) using the nucleobase thymine as an example. Thymine is photoexcited in the UV and probed with X-ray photon energies at and below the oxygen K-edge. After initial photoexcitation to a ππ* excited state, thymine is known to undergo internal conversion to an nπ* excited state with a strong resonance at the oxygen K-edge, red-shifted from the ground state π* resonances of thymine (see our previous study Wolf, et al., Nat. Commun., 2017, 8, 29). We resolve and compare the Auger-Meitner electron spectra associated both with the excited state and ground state resonances, and distinguish participator and spectator decay contributions. Furthermore, we observe simultaneously with the decay of the nπ* state signatures the appearance of additional resonant Auger-Meitner contributions at photon energies between the nπ* state and the ground state resonances. We assign these contributions to population transfer from the nπ* state to a ππ* triplet state via intersystem crossing on the picosecond timescale based on simulations of the X-ray absorption spectra in the vibrationally hot triplet state. Moreover, we identify signatures from the initially excited ππ* singlet state which we have not observed in our previous study.
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Affiliation(s)
- Thomas J A Wolf
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
| | - Alexander C Paul
- Department of Chemistry, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Sarai D Folkestad
- Department of Chemistry, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Rolf H Myhre
- Department of Chemistry, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - James P Cryan
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
| | - Nora Berrah
- Department of Physics, University of Connecticut Storrs, 2152 Hillside Road, Storrs, CT 06269, USA
| | - Phil H Bucksbaum
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA. and Departments of Physics and Applied Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USA
| | - Sonia Coriani
- Department of Chemistry, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway and DTU Chemistry, Technical University of Denmark, Kongens Lyngby, DK-2800, Denmark
| | - Giacomo Coslovich
- Linac Coherent Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Raimund Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58 Gothenburg, Sweden
| | - Todd J Martinez
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA. and Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, CA 94305, USA
| | - Stefan P Moeller
- Linac Coherent Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Melanie Mucke
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
| | - Razib Obaid
- Department of Physics, University of Connecticut Storrs, 2152 Hillside Road, Storrs, CT 06269, USA
| | - Oksana Plekan
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Richard J Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58 Gothenburg, Sweden
| | - Henrik Koch
- Scuola Normale Superiore, I-56126 Pisa, Italy.
| | - Markus Gühr
- Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Straßze 24/25, DE-14476 Potsdam, Germany.
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25
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Koulentianos D, Carniato S, Püttner R, Martins JB, Travnikova O, Marchenko T, Journel L, Guillemin R, Ismail I, Céolin D, Piancastelli MN, Feifel R, Simon M. The O K -2V spectrum of CO: the influence of the second core-hole. Phys Chem Chem Phys 2021; 23:10780-10790. [PMID: 33908498 DOI: 10.1039/d1cp00607j] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using synchrotron radiation in the tender X-ray regime, a photoelectron spectrum showing the formation of single site double-core-hole pre-edge states, involving the K shell of the O atom in CO, has been recorded by means of high-resolution electron spectroscopy. The experimentally observed structures have been simulated, interpreted and assigned, employing state-of-the-art ab initio quantum chemical calculations, on the basis of a theoretical model, accounting for their so-called direct or conjugate character. Features appearing above the double ionization threshold have been reproduced by taking into account the strong mixing between multi-excited and continuum states. The shift of the σ* resonance below the double ionization threshold, in combination with the non-negligible contributions of multi-excited configurations in the final states reached, gives rise to a series of avoided crossings between the different potential energy curves.
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Affiliation(s)
- D Koulentianos
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris Cedex 05, France
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26
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Hochlaf M, Linguerri R, Cheraki M, Ayari T, Ben Said R, Feifel R, Chambaud G. S 2O 2q+ ( q = 0, 1, and 2) Molecular Systems: Characterization and Atmospheric Planetary Implications. J Phys Chem A 2021; 125:1958-1971. [PMID: 33635674 DOI: 10.1021/acs.jpca.0c11407] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We use accurate ab initio methodologies at the coupled cluster level ((R)CCSD(T)) and its explicitly correlated version ((R)CCSD(T)-F12) to investigate the electronic structure, relative stability, and spectroscopy of the stable isomers of the [S2O2] system and of some of its cations and dications, with a special focus on the most relevant isomers that could be involved in terrestrial and planetary atmospheres. This work identifies several stable isomers (10 neutral, 8 cationic, and 5 dicationic), including trigonal-OSSO, cis-OSSO, and cyc-OSSO. For all these isomers, we calculated geometric parameters, fragmentation energies, and simple and double ionization energies of the neutral species. Several structures are identified for the first time, especially for the ionic species. Computations show that in addition to cis-OSSO and trans-OSSO proposed for the absorption in the near-UV spectrum of the Venusian atmosphere other S2O2, S2O2+, and S2O22+ species may contribute. Moreover, the characterization of the stability of singly and doubly charged S2O2 entities can also be used for their identification by mass spectrometry and UV spectroscopy in the laboratory or in planetary atmospheres. In sum, the quest for the main UV absorber in Venus' atmosphere is not over, since the physical chemistry of sulfur oxides in Venus' atmosphere is far from being understood.
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Affiliation(s)
- Majdi Hochlaf
- Université Gustave Eiffel, COSYS/LISIS, 5 Bd Descartes 77454, Champs sur Marne, France
| | - Roberto Linguerri
- Université Gustave Eiffel, COSYS/LISIS, 5 Bd Descartes 77454, Champs sur Marne, France
| | - Mohamed Cheraki
- Université Gustave Eiffel, COSYS/LISIS, 5 Bd Descartes 77454, Champs sur Marne, France
| | - Tarek Ayari
- Université Gustave Eiffel, COSYS/LISIS, 5 Bd Descartes 77454, Champs sur Marne, France
| | - Ridha Ben Said
- Department of Chemistry, College of Science and Arts, Qassim University, Ar Rass 58863, Saudi Arabia
| | - Raimund Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58 Gothenburg, Sweden
| | - Gilberte Chambaud
- Université Gustave Eiffel, COSYS/LISIS, 5 Bd Descartes 77454, Champs sur Marne, France
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27
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Zhong S, Vinbladh J, Busto D, Squibb RJ, Isinger M, Neoričić L, Laurell H, Weissenbilder R, Arnold CL, Feifel R, Dahlström JM, Wendin G, Gisselbrecht M, Lindroth E, L'Huillier A. Attosecond electron-spin dynamics in Xe 4d photoionization. Nat Commun 2020; 11:5042. [PMID: 33028822 PMCID: PMC7541461 DOI: 10.1038/s41467-020-18847-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 05/28/2020] [Accepted: 09/09/2020] [Indexed: 11/16/2022] Open
Abstract
The photoionization of xenon atoms in the 70–100 eV range reveals several fascinating physical phenomena such as a giant resonance induced by the dynamic rearrangement of the electron cloud after photon absorption, an anomalous branching ratio between intermediate Xe+ states separated by the spin-orbit interaction and multiple Auger decay processes. These phenomena have been studied in the past, using in particular synchrotron radiation, but without access to real-time dynamics. Here, we study the dynamics of Xe 4d photoionization on its natural time scale combining attosecond interferometry and coincidence spectroscopy. A time-frequency analysis of the involved transitions allows us to identify two interfering ionization mechanisms: the broad giant dipole resonance with a fast decay time less than 50 as, and a narrow resonance at threshold induced by spin-flip transitions, with much longer decay times of several hundred as. Our results provide insight into the complex electron-spin dynamics of photo-induced phenomena. Here the authors report experiment and theory study of the photoionization of xenon inner shell 4d electron using attosecond pulses. They have identified two ionization paths - one corresponding to broad giant dipole resonance with short decay time and the other involving spin-flip transitions.
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Affiliation(s)
- Shiyang Zhong
- Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden.
| | - Jimmy Vinbladh
- Department of Physics, Stockholm University, AlbaNova University Center, Stockholm, SE-106 91, Sweden
| | - David Busto
- Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden
| | - Richard J Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, Gothenburg, SE-412 96, Sweden
| | - Marcus Isinger
- Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden
| | - Lana Neoričić
- Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden
| | - Hugo Laurell
- Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden
| | - Robin Weissenbilder
- Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden
| | - Cord L Arnold
- Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden
| | - Raimund Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, Gothenburg, SE-412 96, Sweden
| | | | - Göran Wendin
- Department of Microtechnology and Nanoscience-MC2, Chalmers University of Technology, Gothenburg, SE-412 96, Sweden
| | | | - Eva Lindroth
- Department of Physics, Stockholm University, AlbaNova University Center, Stockholm, SE-106 91, Sweden
| | - Anne L'Huillier
- Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden
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28
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Wituschek A, Bruder L, Allaria E, Bangert U, Binz M, Callegari C, Cinquegrana P, Danailov M, Demidovich A, Di Fraia M, Feifel R, Laarmann T, Michiels R, Mudrich M, Nikolov I, Piseri P, Plekan O, Charles Prince K, Przystawik A, Rebernic Ribič P, Sigalotti P, Stranges S, Uhl D, Giannessi L, Stienkemeier F. High-gain harmonic generation with temporally overlapping seed pulses and application to ultrafast spectroscopy. Opt Express 2020; 28:29976-29990. [PMID: 33114885 DOI: 10.1364/oe.401249] [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] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 09/07/2020] [Indexed: 06/11/2023]
Abstract
Collinear double-pulse seeding of the High-Gain Harmonic Generation (HGHG) process in a free-electron laser (FEL) is a promising approach to facilitate various coherent nonlinear spectroscopy schemes in the extreme ultraviolet (XUV) spectral range. However, in collinear arrangements using a single nonlinear medium, temporally overlapping seed pulses may introduce nonlinear mixing signals that compromise the experiment at short time delays. Here, we investigate these effects in detail by extending the analysis described in a recent publication (Wituschek et al., Nat. Commun., 11, 883, 2020). High-order fringe-resolved autocorrelation and wave packet interferometry experiments at photon energies > 23 eV are performed, accompanied by numerical simulations. It turns out that both the autocorrelation and the wave-packet interferometry data are very sensitive to saturation effects and can thus be used to characterize saturation in the HGHG process. Our results further imply that time-resolved spectroscopy experiments are feasible even for time delays smaller than the seed pulse duration.
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29
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Nandi S, Plésiat E, Zhong S, Palacios A, Busto D, Isinger M, Neoričić L, Arnold CL, Squibb RJ, Feifel R, Decleva P, L’Huillier A, Martín F, Gisselbrecht M. Attosecond timing of electron emission from a molecular shape resonance. Sci Adv 2020; 6:eaba7762. [PMID: 32789174 PMCID: PMC7399650 DOI: 10.1126/sciadv.aba7762] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 06/17/2020] [Indexed: 06/11/2023]
Abstract
Shape resonances in physics and chemistry arise from the spatial confinement of a particle by a potential barrier. In molecular photoionization, these barriers prevent the electron from escaping instantaneously, so that nuclei may move and modify the potential, thereby affecting the ionization process. By using an attosecond two-color interferometric approach in combination with high spectral resolution, we have captured the changes induced by the nuclear motion on the centrifugal barrier that sustains the well-known shape resonance in valence-ionized N2. We show that despite the nuclear motion altering the bond length by only 2%, which leads to tiny changes in the potential barrier, the corresponding change in the ionization time can be as large as 200 attoseconds. This result poses limits to the concept of instantaneous electronic transitions in molecules, which is at the basis of the Franck-Condon principle of molecular spectroscopy.
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Affiliation(s)
- S. Nandi
- Department of Physics, Lund University, 22100 Lund, Sweden
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France
| | - E. Plésiat
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - S. Zhong
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - A. Palacios
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Institute of Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - D. Busto
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - M. Isinger
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - L. Neoričić
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - C. L. Arnold
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - R. J. Squibb
- Department of Physics, University of Gothenburg, 41296 Göteborg, Sweden
| | - R. Feifel
- Department of Physics, University of Gothenburg, 41296 Göteborg, Sweden
| | - P. Decleva
- Dipartimento di Scienze Chimiche e Farmaceutiche, Universitá di Trieste and IOM-CNR, 34127 Trieste, Italy
| | - A. L’Huillier
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - F. Martín
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia), Cantoblanco, 28049 Madrid, Spain
- Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastián, Spain
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30
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Maroju PK, Grazioli C, Di Fraia M, Moioli M, Ertel D, Ahmadi H, Plekan O, Finetti P, Allaria E, Giannessi L, De Ninno G, Spezzani C, Penco G, Spampinati S, Demidovich A, Danailov MB, Borghes R, Kourousias G, Sanches Dos Reis CE, Billé F, Lutman AA, Squibb RJ, Feifel R, Carpeggiani P, Reduzzi M, Mazza T, Meyer M, Bengtsson S, Ibrakovic N, Simpson ER, Mauritsson J, Csizmadia T, Dumergue M, Kühn S, Nandiga Gopalakrishna H, You D, Ueda K, Labeye M, Bækhøj JE, Schafer KJ, Gryzlova EV, Grum-Grzhimailo AN, Prince KC, Callegari C, Sansone G. Attosecond pulse shaping using a seeded free-electron laser. Nature 2020; 578:386-391. [DOI: 10.1038/s41586-020-2005-6] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 11/05/2019] [Indexed: 11/09/2022]
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31
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Wallner M, Eland JHD, Squibb RJ, Andersson J, Roos AH, Singh R, Talaee O, Koulentianos D, Piancastelli MN, Simon M, Feifel R. Coulomb explosion of CD 3I induced by single photon deep inner-shell ionisation. Sci Rep 2020; 10:1246. [PMID: 31988321 PMCID: PMC6985119 DOI: 10.1038/s41598-020-58251-9] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 01/13/2020] [Indexed: 12/05/2022] Open
Abstract
L-shell ionisation and subsequent Coulomb explosion of fully deuterated methyl iodide, CD3I, irradiated with hard X-rays has been examined by a time-of-flight multi-ion coincidence technique. The core vacancies relax efficiently by Auger cascades, leading to charge states up to 16+. The dynamics of the Coulomb explosion process are investigated by calculating the ions’ flight times numerically based on a geometric model of the experimental apparatus, for comparison with the experimental data. A parametric model of the explosion, previously introduced for multi-photon induced Coulomb explosion, is applied in numerical simulations, giving good agreement with the experimental results for medium charge states. Deviations for higher charges suggest the need to include nuclear motion in a putatively more complete model. Detection efficiency corrections from the simulations are used to determine the true distributions of molecular charge states produced by initial L1, L2 and L3 ionisation.
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Affiliation(s)
- M Wallner
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - J H D Eland
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden.,Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
| | - R J Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - J Andersson
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - A Hult Roos
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - R Singh
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - O Talaee
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden.,Nano and Molecular Systems Research Unit, University of Oulu, P.O. Box 3000, FI-90014, Oulu, Finland
| | - D Koulentianos
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden.,Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005, Paris, Cedex 05, France
| | - M N Piancastelli
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005, Paris, Cedex 05, France.,Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden
| | - M Simon
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005, Paris, Cedex 05, France.,Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, F-91192, Gif-sur-Yvette, Cedex, France
| | - R Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden.
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32
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Andersson J, Zagorodskikh S, Roos AH, Talaee O, Squibb RJ, Koulentianos D, Wallner M, Zhaunerchyk V, Singh R, Eland JHD, Rost JM, Feifel R. Parametrization of energy sharing distributions in direct double photoionization of He. Sci Rep 2019; 9:17883. [PMID: 31784628 PMCID: PMC6884530 DOI: 10.1038/s41598-019-53545-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 03/26/2019] [Accepted: 10/31/2019] [Indexed: 11/18/2022] Open
Abstract
We present experimental results on the characteristic sharing of available excess energy, ranging from 11–221 eV, between two electrons in single-photon direct double ionization of He. An effective parametrization of the sharing distributions is presented along with an empirical model that describes the complete shape of the distribution based on a single experimentally determinable parameter. The measured total energy sharing distributions are separated into two distributions representing the shake-off and knock-out parts by simulating the sharing distribution curves expected from a pure wave collapse after a sudden removal of the primary electron. In this way, empirical knock-out distributions are extracted and both the shake-off and knock-out distributions are parametrized. These results suggest a simple method that can be applied to other atomic and molecular systems to experimentally study important aspects of the direct double ionization process.
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Affiliation(s)
- J Andersson
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden
| | - S Zagorodskikh
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden.,Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden
| | - A Hult Roos
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden
| | - O Talaee
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden.,Nano and Molecular Systems Research Unit, University of Oulu, P.O. Box 3000, FI-90014 University of Oulu, Oulu, Finland
| | - R J Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden
| | - D Koulentianos
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden.,Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005, Paris, Cedex 05, France
| | - M Wallner
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden
| | - V Zhaunerchyk
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden
| | - R Singh
- Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - J H D Eland
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden.,Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
| | - J M Rost
- Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Str. 38, D-01187, Dresden, Germany
| | - R Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden.
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33
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Eland JHD, Feifel R. Triple ionization of HCl via states with a 2p core hole. J Chem Phys 2019; 151:114301. [PMID: 31542004 DOI: 10.1063/1.5115552] [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: 11/14/2022] Open
Abstract
The triple ionization of HCl by double Auger decay and related processes has been studied using a multiparticle coincidence technique combined with synchrotron radiation. Four contributing processes are identified; direct double Auger, two indirect double Auger decay pathways, and single Auger decay from core-valence doubly ionized intermediate states. One indirect Auger process involves autoionization from superexcited states of Cl+. Double Auger decay from HCl+ (2p-1, 2PJ), which makes up 11% ± 2% of total Auger decay, is estimated to be 40% direct, 15% indirect via atomic Cl+* and 45% indirect via molecular intermediate doubly ionized states. The vertical triple ionization energy of HCl is determined as 73.8 ± 0.5 eV. Molecular field effects are found to affect the direct double Auger process as well as normal single Auger decay. A comparison between spectra of the HCl and DCl isotopomers indicates that electronic decay is faster in all the processes than molecular dissociation.
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Affiliation(s)
- J H D Eland
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - R Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
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34
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Yatsyna V, Mallat R, Gorn T, Schmitt M, Feifel R, Rijs AM, Zhaunerchyk V. Conformational Preferences of Isolated Glycylglycine (Gly-Gly) Investigated with IRMPD-VUV Action Spectroscopy and Advanced Computational Approaches. J Phys Chem A 2019; 123:862-872. [DOI: 10.1021/acs.jpca.8b10881] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Vasyl Yatsyna
- Department of Physics, University of Gothenburg, 412 96 Gothenburg, Sweden
- Radboud University, Institute of Molecules and Materials, FELIX Laboratory, Toernoovield 7-c, 6525 ED Nijmegen, The Netherlands
| | - Ranim Mallat
- Department of Physics, University of Gothenburg, 412 96 Gothenburg, Sweden
| | - Tim Gorn
- Institut für Physikalische Chemie I, Heinrich-Heine-Universität, D-40225 Düsseldorf, Germany
| | - Michael Schmitt
- Institut für Physikalische Chemie I, Heinrich-Heine-Universität, D-40225 Düsseldorf, Germany
| | - Raimund Feifel
- Department of Physics, University of Gothenburg, 412 96 Gothenburg, Sweden
| | - Anouk M. Rijs
- Radboud University, Institute of Molecules and Materials, FELIX Laboratory, Toernoovield 7-c, 6525 ED Nijmegen, The Netherlands
| | - Vitali Zhaunerchyk
- Department of Physics, University of Gothenburg, 412 96 Gothenburg, Sweden
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35
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Hult Roos A, Eland JHD, Andersson J, Wallner M, Squibb RJ, Feifel R. Relative extent of triple Auger decay in CO and CO2. Phys Chem Chem Phys 2019; 21:9889-9894. [DOI: 10.1039/c9cp01415b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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
Systematic measurements on single and triple Auger decay in CO and CO2 after the creation of a C 1s or a O 1s core vacancy show that the percentage of triple Auger decay is on the order of 10−2 of the single Auger decay in these molecules.
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Affiliation(s)
- A. Hult Roos
- Department of Physics
- University of Gothenburg
- 412 96 Gothenburg
- Sweden
| | - J. H. D. Eland
- Department of Physics
- University of Gothenburg
- 412 96 Gothenburg
- Sweden
- Department of Chemistry
| | - J. Andersson
- Department of Physics
- University of Gothenburg
- 412 96 Gothenburg
- Sweden
| | - M. Wallner
- Department of Physics
- University of Gothenburg
- 412 96 Gothenburg
- Sweden
| | - R. J. Squibb
- Department of Physics
- University of Gothenburg
- 412 96 Gothenburg
- Sweden
| | - R. Feifel
- Department of Physics
- University of Gothenburg
- 412 96 Gothenburg
- Sweden
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36
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Yatsyna V, Mallat R, Gorn T, Schmitt M, Feifel R, Rijs AM, Zhaunerchyk V. Competition between folded and extended structures of alanylalanine (Ala-Ala) in a molecular beam. Phys Chem Chem Phys 2019; 21:14126-14132. [DOI: 10.1039/c9cp00140a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Structural analysis of the neutral dipeptide Ala-Ala by action spectroscopy using IRMPD-VUV spectroscopy reveals predominance of extended structure.
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Affiliation(s)
- Vasyl Yatsyna
- University of Gothenburg
- Department of Physics
- Sweden
- Radboud University
- Institute for Molecules and Materials
| | - Ranim Mallat
- University of Gothenburg
- Department of Physics
- Sweden
| | - Tim Gorn
- Heinrich-Heine-Universität
- Institut für Physikalische Chemie I
- D-40225 Düsseldorf
- Germany
| | - Michael Schmitt
- Heinrich-Heine-Universität
- Institut für Physikalische Chemie I
- D-40225 Düsseldorf
- Germany
| | | | - Anouk M. Rijs
- Radboud University
- Institute for Molecules and Materials
- FELIX Laboratory
- 6525 ED Nijmegen
- The Netherlands
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37
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Roos AH, Eland JHD, Andersson J, Squibb RJ, Feifel R. Dissociations of water ions after valence and inner-valence ionization. J Chem Phys 2018; 149:204307. [DOI: 10.1063/1.5055593] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Affiliation(s)
- A. Hult Roos
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96 Gothenburg, Sweden
| | - J. H. D. Eland
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96 Gothenburg, Sweden
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - J. Andersson
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96 Gothenburg, Sweden
| | - R. J. Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96 Gothenburg, Sweden
| | - R. Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96 Gothenburg, Sweden
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38
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Koulentianos D, Carniato S, Püttner R, Goldsztejn G, Marchenko T, Travnikova O, Journel L, Guillemin R, Céolin D, Rocco MLM, Piancastelli MN, Feifel R, Simon M. Double-core-hole states in CH3CN: Pre-edge structures and chemical-shift contributions. J Chem Phys 2018; 149:134313. [DOI: 10.1063/1.5047854] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- D. Koulentianos
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris Cedex 05, France
| | - S. Carniato
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris Cedex 05, France
| | - R. Püttner
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany
| | - G. Goldsztejn
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris Cedex 05, France
| | - T. Marchenko
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris Cedex 05, France
- Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | - O. Travnikova
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris Cedex 05, France
- Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | - L. Journel
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris Cedex 05, France
- Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | - R. Guillemin
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris Cedex 05, France
- Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | - D. Céolin
- Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | - M. L. M. Rocco
- Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
| | - M. N. Piancastelli
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris Cedex 05, France
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
| | - R. Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
| | - M. Simon
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris Cedex 05, France
- Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
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39
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Roos AH, Eland JHD, Andersson J, Zagorodskikh S, Singh R, Squibb RJ, Feifel R. Relative extent of double and single Auger decay in molecules containing C, N and O atoms. Phys Chem Chem Phys 2018; 18:25705-25710. [PMID: 27711372 DOI: 10.1039/c6cp02414a] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We show that the proportion of double Auger decay following creation of single 1s core holes in molecules containing C, N and O atoms is greater than usually assumed, amounting to about 10% of single Auger decay in many cases. It varies from molecule to molecule, where the size of the molecule has a positive correlation to the amount of double Auger decay. In neon, examined as a related benchmark, the proportion of double Auger decay is similar to that in methane, and is in the order of 5%.
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Affiliation(s)
- A Hult Roos
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96 Gothenburg, Sweden.
| | - J H D Eland
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96 Gothenburg, Sweden. and Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, UK
| | - J Andersson
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96 Gothenburg, Sweden.
| | - S Zagorodskikh
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96 Gothenburg, Sweden. and Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden
| | - R Singh
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96 Gothenburg, Sweden.
| | - R J Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96 Gothenburg, Sweden.
| | - R Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96 Gothenburg, Sweden.
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40
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Squibb RJ, Sapunar M, Ponzi A, Richter R, Kivimäki A, Plekan O, Finetti P, Sisourat N, Zhaunerchyk V, Marchenko T, Journel L, Guillemin R, Cucini R, Coreno M, Grazioli C, Di Fraia M, Callegari C, Prince KC, Decleva P, Simon M, Eland JHD, Došlić N, Feifel R, Piancastelli MN. Acetylacetone photodynamics at a seeded free-electron laser. Nat Commun 2018; 9:63. [PMID: 29302026 PMCID: PMC5754354 DOI: 10.1038/s41467-017-02478-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [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: 06/06/2017] [Accepted: 12/04/2017] [Indexed: 11/30/2022] Open
Abstract
The first steps in photochemical processes, such as photosynthesis or animal vision, involve changes in electronic and geometric structure on extremely short time scales. Time-resolved photoelectron spectroscopy is a natural way to measure such changes, but has been hindered hitherto by limitations of available pulsed light sources in the vacuum-ultraviolet and soft X-ray spectral region, which have insufficient resolution in time and energy simultaneously. The unique combination of intensity, energy resolution, and femtosecond pulse duration of the FERMI-seeded free-electron laser can now provide exceptionally detailed information on photoexcitation–deexcitation and fragmentation in pump-probe experiments on the 50-femtosecond time scale. For the prototypical system acetylacetone we report here electron spectra measured as a function of time delay with enough spectral and time resolution to follow several photoexcited species through well-characterized individual steps, interpreted using state-of-the-art static and dynamics calculations. These results open the way for investigations of photochemical processes in unprecedented detail. The first steps in photochemical processes involve changes in electronic and geometric structure on extremely short timescales. Here, the authors report femtosecond dynamics in prototypical acetylacetone, by pump-probe photoexcitation-photoemission experiments and static and dynamics calculations.
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Affiliation(s)
- R J Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96, Gothenburg, Sweden
| | - M Sapunar
- Institut Ruđer Bošković, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - A Ponzi
- Institut Ruđer Bošković, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - R Richter
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy
| | - A Kivimäki
- Consiglio Nazionale delle Ricerche-Istituto Officina dei Materiali, 34149, Trieste, Italy
| | - O Plekan
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy
| | - P Finetti
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy
| | - N Sisourat
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - V Zhaunerchyk
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96, Gothenburg, Sweden
| | - T Marchenko
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - L Journel
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - R Guillemin
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - R Cucini
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy
| | - M Coreno
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy.,Consiglio Nazionale delle Ricerche - Istituto di Struttura della Materia, LD2 unit, 34149, Trieste, Italy
| | - C Grazioli
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy.,Consiglio Nazionale delle Ricerche - Istituto di Struttura della Materia, LD2 unit, 34149, Trieste, Italy
| | - M Di Fraia
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy.,Consiglio Nazionale delle Ricerche - Istituto di Struttura della Materia, LD2 unit, 34149, Trieste, Italy
| | - C Callegari
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy.,Consiglio Nazionale delle Ricerche - Istituto di Struttura della Materia, LD2 unit, 34149, Trieste, Italy
| | - K C Prince
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy.,Molecular Model Discovery Laboratory, Department of Chemistry and Biotechnology, Swinburne University of Technology, Melbourne, VIC, 3122, Australia
| | - P Decleva
- Consiglio Nazionale delle Ricerche-Istituto Officina dei Materiali, 34149, Trieste, Italy.,Dipartimento di Scienze Chimiche e Farmaceutiche, Universitá di Trieste, 34127, Trieste, Italy
| | - M Simon
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - J H D Eland
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96, Gothenburg, Sweden.,Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, UK
| | - N Došlić
- Institut Ruđer Bošković, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - R Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96, Gothenburg, Sweden
| | - M N Piancastelli
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France. .,Department of Physics and Astronomy, Uppsala University, SE-751 20, Uppsala, Sweden.
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41
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Koulentianos D, Püttner R, Goldsztejn G, Marchenko T, Travnikova O, Journel L, Guillemin R, Céolin D, Piancastelli MN, Simon M, Feifel R. KL double core hole pre-edge states of HCl. Phys Chem Chem Phys 2018; 20:2724-2730. [DOI: 10.1039/c7cp04214k] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The formation of double core hole pre-edge states of the form 1s−12p−1(1,3P)σ*,n for HCl, located on the binding energy scale as deep as 3 keV, has been investigated by means of a high resolution single channel electron spectroscopy technique recently developed for the hard X-ray region.
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42
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Isinger M, Squibb RJ, Busto D, Zhong S, Harth A, Kroon D, Nandi S, Arnold CL, Miranda M, Dahlström JM, Lindroth E, Feifel R, Gisselbrecht M, L’Huillier A. Photoionization in the time and frequency domain. Science 2017; 358:893-896. [DOI: 10.1126/science.aao7043] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 10/19/2017] [Indexed: 11/02/2022]
Abstract
Ultrafast processes in matter, such as the electron emission after light absorption, can now be studied using ultrashort light pulses of attosecond duration (10−18 seconds) in the extreme ultraviolet spectral range. The lack of spectral resolution due to the use of short light pulses has raised issues in the interpretation of the experimental results and the comparison with theoretical calculations. We determine photoionization time delays in neon atoms over a 40–electron volt energy range with an interferometric technique combining high temporal and spectral resolution. We spectrally disentangle direct ionization from ionization with shake-up, in which a second electron is left in an excited state, and obtain excellent agreement with theoretical calculations, thereby solving a puzzle raised by 7-year-old measurements.
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Affiliation(s)
- M. Isinger
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - R. J. Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-41 296 Göteborg, Sweden
| | - D. Busto
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - S. Zhong
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - A. Harth
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - D. Kroon
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - S. Nandi
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - C. L. Arnold
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - M. Miranda
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - J. M. Dahlström
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
- Department of Physics, Stockholm University, SE-106 91 Stockholm, Sweden
| | - E. Lindroth
- Department of Physics, Stockholm University, SE-106 91 Stockholm, Sweden
| | - R. Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-41 296 Göteborg, Sweden
| | - M. Gisselbrecht
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - A. L’Huillier
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
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43
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Feifel R, Eland JHD, Carniato S, Selles P, Püttner R, Koulentianos D, Marchenko T, Journel L, Guillemin R, Goldsztejn G, Travnikova O, Ismail I, Miranda BCD, Lago AF, Céolin D, Lablanquie P, Penent F, Piancastelli MN, Simon M. Cationic double K-hole pre-edge states of CS 2 and SF 6. Sci Rep 2017; 7:13317. [PMID: 29042664 PMCID: PMC5645408 DOI: 10.1038/s41598-017-13607-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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: 08/01/2017] [Accepted: 09/26/2017] [Indexed: 11/09/2022] Open
Abstract
Recent advances in X-ray instrumentation have made it possible to measure the spectra of an essentially unexplored class of electronic states associated with double inner-shell vacancies. Using the technique of single electron spectroscopy, spectra of states in CS2 and SF6 with a double hole in the K-shell and one electron exited to a normally unoccupied orbital have been obtained. The spectra are interpreted with the aid of a high-level theoretical model giving excellent agreement with the experiment. The results shed new light on the important distinction between direct and conjugate shake-up in a molecular context. In particular, systematic similarities and differences between pre-edge states near single core holes investigated in X-ray absorption spectra and the corresponding states near double core holes studied here are brought out.
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Affiliation(s)
- R Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96, Gothenburg, Sweden.
| | - J H D Eland
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96, Gothenburg, Sweden.,Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
| | - S Carniato
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - P Selles
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - R Püttner
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, D-14195, Berlin, Germany
| | - D Koulentianos
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96, Gothenburg, Sweden.,Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - T Marchenko
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France.,Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, F-91192, Gif-sur-Yvette Cedex, France
| | - L Journel
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France.,Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, F-91192, Gif-sur-Yvette Cedex, France
| | - R Guillemin
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France.,Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, F-91192, Gif-sur-Yvette Cedex, France
| | - G Goldsztejn
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France.,Max-Born-Institut, Max-Born-Strasse 2A, 12489, Berlin, Germany
| | - O Travnikova
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France.,Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, F-91192, Gif-sur-Yvette Cedex, France
| | - I Ismail
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - B Cunha de Miranda
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - A F Lago
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Av. dos Estados, 5001, 09210-580, Santo André, SP, Brazil
| | - D Céolin
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, F-91192, Gif-sur-Yvette Cedex, France
| | - P Lablanquie
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - F Penent
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - M N Piancastelli
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France.,Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden
| | - M Simon
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France.,Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, F-91192, Gif-sur-Yvette Cedex, France
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44
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Hult Roos A, Eland J, Koulentianos D, Squibb R, Karlsson L, Feifel R. Valence double ionization electron spectra of CH 3 F, CH 3 Cl and CH 3 I. Chem Phys 2017. [DOI: 10.1016/j.chemphys.2017.04.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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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45
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Wolf TJA, Myhre RH, Cryan JP, Coriani S, Squibb RJ, Battistoni A, Berrah N, Bostedt C, Bucksbaum P, Coslovich G, Feifel R, Gaffney KJ, Grilj J, Martinez TJ, Miyabe S, Moeller SP, Mucke M, Natan A, Obaid R, Osipov T, Plekan O, Wang S, Koch H, Gühr M. Probing ultrafast ππ*/nπ* internal conversion in organic chromophores via K-edge resonant absorption. Nat Commun 2017; 8:29. [PMID: 28642477 PMCID: PMC5481431 DOI: 10.1038/s41467-017-00069-7] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [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: 03/07/2017] [Accepted: 04/28/2017] [Indexed: 11/09/2022] Open
Abstract
Many photoinduced processes including photosynthesis and human vision happen in organic molecules and involve coupled femtosecond dynamics of nuclei and electrons. Organic molecules with heteroatoms often possess an important excited-state relaxation channel from an optically allowed ππ* to a dark nπ* state. The ππ*/nπ* internal conversion is difficult to investigate, as most spectroscopic methods are not exclusively sensitive to changes in the excited-state electronic structure. Here, we report achieving the required sensitivity by exploiting the element and site specificity of near-edge soft X-ray absorption spectroscopy. As a hole forms in the n orbital during ππ*/nπ* internal conversion, the absorption spectrum at the heteroatom K-edge exhibits an additional resonance. We demonstrate the concept using the nucleobase thymine at the oxygen K-edge, and unambiguously show that ππ*/nπ* internal conversion takes place within (60 ± 30) fs. High-level-coupled cluster calculations confirm the method's impressive electronic structure sensitivity for excited-state investigations.Many photo-induced processes such as photosynthesis occur in organic molecules, but their femtosecond excited-state dynamics are difficult to track. Here, the authors exploit the element and site selectivity of soft X-ray absorption to sensitively follow the ultrafast ππ*/nπ* electronic relaxation of hetero-organic molecules.
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Affiliation(s)
- T J A Wolf
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - R H Myhre
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Department of Chemistry, Norwegian University of Science and Technology, NO-7491, Trondheim, Norway
| | - J P Cryan
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - S Coriani
- Dipartimento di Scienze Chimiche e Farmaceutiche, Università degli Studi di Trieste, Piazzale Europa 1, Trieste, IT-34127, Italy
- Department of Chemistry, Technical University of Denmark, 2800, Kongens Lyngby, Denmark
| | - R J Squibb
- Department of Physics, University of Gothenburg, SE-412 96, Gothenburg, Sweden
| | - A Battistoni
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - N Berrah
- Department of Physics, University of Connecticut, 2152 Hillside Road, Storrs, CT, 06269, USA
| | - C Bostedt
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Argonne National Laboratory, 9700 Cass Avenue, Lemont, IL, 60439, USA
- Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - P Bucksbaum
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA, 94305, USA
| | - G Coslovich
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - R Feifel
- Department of Physics, University of Gothenburg, SE-412 96, Gothenburg, Sweden
| | - K J Gaffney
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - J Grilj
- Laboratory of Ultrafast Spectroscopy, Ecole Polytechnique Federal de Lausanne, Lausanne, CH-1015, Switzerland
| | - T J Martinez
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, CA, 94305, USA
| | - S Miyabe
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, CA, 94305, USA
- Laser Technology Laboratory, RIKEN, Wako, Saitama, 351-0198, Japan
| | - S P Moeller
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - M Mucke
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden
| | - A Natan
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - R Obaid
- Department of Physics, University of Connecticut, 2152 Hillside Road, Storrs, CT, 06269, USA
| | - T Osipov
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - O Plekan
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163,5 AREA Science Park, IT-34149, Basovizza, Trieste, Italy
| | - S Wang
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - H Koch
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
- Department of Chemistry, Norwegian University of Science and Technology, NO-7491, Trondheim, Norway.
| | - M Gühr
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
- Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Straße 24/25, DE-14476, Potsdam, Germany.
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46
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Sanchez-Gonzalez A, Micaelli P, Olivier C, Barillot TR, Ilchen M, Lutman AA, Marinelli A, Maxwell T, Achner A, Agåker M, Berrah N, Bostedt C, Bozek JD, Buck J, Bucksbaum PH, Montero SC, Cooper B, Cryan JP, Dong M, Feifel R, Frasinski LJ, Fukuzawa H, Galler A, Hartmann G, Hartmann N, Helml W, Johnson AS, Knie A, Lindahl AO, Liu J, Motomura K, Mucke M, O'Grady C, Rubensson JE, Simpson ER, Squibb RJ, Såthe C, Ueda K, Vacher M, Walke DJ, Zhaunerchyk V, Coffee RN, Marangos JP. Accurate prediction of X-ray pulse properties from a free-electron laser using machine learning. Nat Commun 2017; 8:15461. [PMID: 28580940 PMCID: PMC5465316 DOI: 10.1038/ncomms15461] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [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: 11/04/2016] [Accepted: 03/30/2017] [Indexed: 11/09/2022] Open
Abstract
Free-electron lasers providing ultra-short high-brightness pulses of X-ray radiation have great potential for a wide impact on science, and are a critical element for unravelling the structural dynamics of matter. To fully harness this potential, we must accurately know the X-ray properties: intensity, spectrum and temporal profile. Owing to the inherent fluctuations in free-electron lasers, this mandates a full characterization of the properties for each and every pulse. While diagnostics of these properties exist, they are often invasive and many cannot operate at a high-repetition rate. Here, we present a technique for circumventing this limitation. Employing a machine learning strategy, we can accurately predict X-ray properties for every shot using only parameters that are easily recorded at high-repetition rate, by training a model on a small set of fully diagnosed pulses. This opens the door to fully realizing the promise of next-generation high-repetition rate X-ray lasers.
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Affiliation(s)
| | - P Micaelli
- Department of Physics, Imperial College London, London, SW7 2AZ, UK
| | - C Olivier
- Department of Physics, Imperial College London, London, SW7 2AZ, UK
| | - T R Barillot
- Department of Physics, Imperial College London, London, SW7 2AZ, UK
| | - M Ilchen
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.,European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - A A Lutman
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - A Marinelli
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - T Maxwell
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - A Achner
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - M Agåker
- Department of Physics and Astronomy, Uppsala University, Uppsala 75120, Sweden
| | - N Berrah
- Department of Physics, University of Connecticut, 2152 Hillside Road, U-3046, Storrs, Connecticut 06269, USA
| | - C Bostedt
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.,Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - J D Bozek
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin, 91192 Gif-sur-Yvette, France
| | - J Buck
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - P H Bucksbaum
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.,Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, California 94305, USA
| | - S Carron Montero
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.,Department of Physics, California Lutheran University, 60 West Olsen Road, Thousand Oaks, California 91360, USA
| | - B Cooper
- Department of Physics, Imperial College London, London, SW7 2AZ, UK
| | - J P Cryan
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - M Dong
- Department of Physics and Astronomy, Uppsala University, Uppsala 75120, Sweden
| | - R Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, 41296 Gothenburg, Sweden
| | - L J Frasinski
- Department of Physics, Imperial College London, London, SW7 2AZ, UK
| | - H Fukuzawa
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - A Galler
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - G Hartmann
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.,Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Str 40, 34132 Kassel, Germany
| | - N Hartmann
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - W Helml
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.,Physics Department E11, TU Munich, James-Franck-Str 1, 85748 Garching, Germany
| | - A S Johnson
- Department of Physics, Imperial College London, London, SW7 2AZ, UK
| | - A Knie
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Str 40, 34132 Kassel, Germany
| | - A O Lindahl
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.,Department of Physics, University of Gothenburg, Origovägen 6B, 41296 Gothenburg, Sweden
| | - J Liu
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - K Motomura
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - M Mucke
- Department of Physics and Astronomy, Uppsala University, Uppsala 75120, Sweden
| | - C O'Grady
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - J-E Rubensson
- Department of Physics and Astronomy, Uppsala University, Uppsala 75120, Sweden
| | - E R Simpson
- Department of Physics, Imperial College London, London, SW7 2AZ, UK
| | - R J Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, 41296 Gothenburg, Sweden
| | - C Såthe
- MAX IV Laboratory, Lund University, Box 118, SE-221 00 Lund, Sweden
| | - K Ueda
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - M Vacher
- Department of Chemistry, Imperial College, London SW7 2AZ, UK.,Department of Chemistry-Ångtröm, Uppsala University, Uppsala 75120, Sweden
| | - D J Walke
- Department of Physics, Imperial College London, London, SW7 2AZ, UK
| | - V Zhaunerchyk
- Department of Physics, University of Gothenburg, Origovägen 6B, 41296 Gothenburg, Sweden
| | - R N Coffee
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - J P Marangos
- Department of Physics, Imperial College London, London, SW7 2AZ, UK
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47
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Yatsyna V, Bakker DJ, Feifel R, Rijs AM, Zhaunerchyk V. Far-infrared amide IV-VI spectroscopy of isolated 2- and 4-Methylacetanilide. J Chem Phys 2017; 145:104309. [PMID: 27634262 DOI: 10.1063/1.4962360] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Delocalized molecular vibrations in the far-infrared and THz ranges are highly sensitive to the molecular structure, as well as to intra- and inter-molecular interactions. Thus, spectroscopic studies of biomolecular structures can greatly benefit from an extension of the conventional mid-infrared to the far-infrared wavelength range. In this work, the conformer-specific gas-phase far-infrared spectra of two aromatic molecules containing the peptide -CO-NH- link, namely, 2- and 4-Methylacetanilide, are investigated. The planar conformations with trans configuration of the peptide link have only been observed in the supersonic-jet expansion. The corresponding far-infrared signatures associated with the vibrations of the peptide -CO-NH- moiety, the so-called amide IV-VI bands, have been assigned and compared with the results of density functional theory frequency calculations based on the anharmonic vibrational second-order perturbation theory approach. The analysis of the experimental and theoretical data shows that the amide IV-VI bands are highly diagnostic for the geometry of the peptide moiety and the molecular backbone. They are also strongly blue-shifted upon formation of the NH⋯O-C hydrogen bonding, which is, for example, responsible for the formation of secondary protein structures. Furthermore, the amide IV-VI bands are also diagnostic for the cis configuration of the peptide link, which can be present in cyclic peptides. The experimental gas-phase data presented in this work can assist the vibrational assignment of similar biologically important systems, either isolated or in natural environments.
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Affiliation(s)
- Vasyl Yatsyna
- Department of Physics, University of Gothenburg, 412 96 Gothenburg, Sweden
| | - Daniël J Bakker
- Institute for Molecules and Materials, FELIX Laboratory, Radboud University, Toernoovield 7-c, 6525 ED Nijmegen, The Netherlands
| | - Raimund Feifel
- Department of Physics, University of Gothenburg, 412 96 Gothenburg, Sweden
| | - Anouk M Rijs
- Institute for Molecules and Materials, FELIX Laboratory, Radboud University, Toernoovield 7-c, 6525 ED Nijmegen, The Netherlands
| | - Vitali Zhaunerchyk
- Department of Physics, University of Gothenburg, 412 96 Gothenburg, Sweden
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48
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Hansen K, Richter R, Alagia M, Stranges S, Schio L, Salén P, Yatsyna V, Feifel R, Zhaunerchyk V. Single Photon Thermal Ionization of C_{60}. Phys Rev Lett 2017; 118:103001. [PMID: 28339240 DOI: 10.1103/physrevlett.118.103001] [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: 11/09/2016] [Indexed: 06/06/2023]
Abstract
We report on experiments which show that C_{60} can ionize in an indirect, quasithermal boiloff process after absorption of a single photon. The process involves a large number of incoherently excited valence electrons and yields electron spectra with a Boltzmann distribution with temperatures exceeding 10^{4} K. It is expected to be present for other molecules and clusters with a comparatively large number of valence electrons. The astrophysical consequences are briefly discussed.
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Affiliation(s)
- Klavs Hansen
- Tianjin International Center of Nanoparticles and Nanosystems, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China
- Department of Physics, University of Gothenburg, 41296 Gothenburg, Sweden
| | - Robert Richter
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Basovizza, Trieste, Italy
| | - Michele Alagia
- IOM-CNR Tasc, SS-14, Km 163.5 Area Science Park, Basovizza 34149, Trieste, Italy
| | - Stefano Stranges
- IOM-CNR Tasc, SS-14, Km 163.5 Area Science Park, Basovizza 34149, Trieste, Italy
- Dipartimento di Chimica e Tecnologie del Farmaco, Universitá Sapienza, Rome I-00185, Italy
| | - Luca Schio
- IOM-CNR Tasc, SS-14, Km 163.5 Area Science Park, Basovizza 34149, Trieste, Italy
| | - Peter Salén
- Department of Physics, Stockholm University, 106 91 Stockholm, Sweden
| | - Vasyl Yatsyna
- Department of Physics, University of Gothenburg, 41296 Gothenburg, Sweden
| | - Raimund Feifel
- Department of Physics, University of Gothenburg, 41296 Gothenburg, Sweden
| | - Vitali Zhaunerchyk
- Department of Physics, University of Gothenburg, 41296 Gothenburg, Sweden
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49
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Affiliation(s)
- R. R. Valiev
- Department of Theoretical Chemistry and Biology, School of Biotechnology, KTH Royal Institute of Technology, Stockholm, Sweden
- Department of Optics and Spectroscopy, Tomsk State University, Tomsk, Russian Federation
- Department of General Chemistry and Chemical Engineering, Tomsk Polytechnic University, Tomsk, 634050, Russan Federation
| | - J. H. D. Eland
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
- Department of Physics, University of Gothenburg, Gothenburg, Sweden
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, Oxford, United Kingdom
| | - R. Feifel
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
- Department of Physics, University of Gothenburg, Gothenburg, Sweden
| | - H. Ågren
- Department of Theoretical Chemistry and Biology, School of Biotechnology, KTH Royal Institute of Technology, Stockholm, Sweden
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50
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Zagorodskikh S, Eland JHD, Zhaunerchyk V, Mucke M, Squibb RJ, Linusson P, Feifel R. Mechanisms of site-specific photochemistry following core-shell ionization of chemically inequivalent carbon atoms in acetaldehyde (ethanal). J Chem Phys 2016; 145:124302. [DOI: 10.1063/1.4962823] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Sergey Zagorodskikh
- Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala, Sweden
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
| | - John H. D. Eland
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - Vitali Zhaunerchyk
- Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala, Sweden
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
| | - Melanie Mucke
- Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala, Sweden
| | - Richard J. Squibb
- Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala, Sweden
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
| | - Per Linusson
- Department of Physics, Stockholm University, AlbaNova University Center, SE-106 91 Stockholm, Sweden
| | - Raimund Feifel
- Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala, Sweden
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
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