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Symmetry breakdown of electron emission in extreme ultraviolet photoionization of argon

Author

Listed:
  • M. Ilchen

    (European XFEL GmbH
    University of Kassel)

  • G. Hartmann

    (University of Kassel
    Deutsches Elektronen-Synchrotron (DESY))

  • E. V. Gryzlova

    (Lomonosov Moscow State University)

  • A. Achner

    (European XFEL GmbH)

  • E. Allaria

    (Elettra-Sincrotrone Trieste SCpA)

  • A. Beckmann

    (X-Spectrum GmbH)

  • M. Braune

    (Deutsches Elektronen-Synchrotron (DESY))

  • J. Buck

    (European XFEL GmbH
    Deutsches Elektronen-Synchrotron (DESY))

  • C. Callegari

    (Elettra-Sincrotrone Trieste SCpA)

  • R. N. Coffee

    (SLAC National Accelerator Laboratory)

  • R. Cucini

    (Elettra-Sincrotrone Trieste SCpA)

  • M. Danailov

    (Elettra-Sincrotrone Trieste SCpA)

  • A. Fanis

    (European XFEL GmbH)

  • A. Demidovich

    (Elettra-Sincrotrone Trieste SCpA)

  • E. Ferrari

    (École Polytechnique Fédérale de Lausanne)

  • P. Finetti

    (Elettra-Sincrotrone Trieste SCpA)

  • L. Glaser

    (Deutsches Elektronen-Synchrotron (DESY))

  • A. Knie

    (University of Kassel)

  • A. O. Lindahl

    (Qamcom Research & Technology AB)

  • O. Plekan

    (Elettra-Sincrotrone Trieste SCpA)

  • N. Mahne

    (Elettra-Sincrotrone Trieste SCpA)

  • T. Mazza

    (European XFEL GmbH)

  • L. Raimondi

    (Elettra-Sincrotrone Trieste SCpA)

  • E. Roussel

    (Elettra-Sincrotrone Trieste SCpA)

  • F. Scholz

    (Deutsches Elektronen-Synchrotron (DESY))

  • J. Seltmann

    (Deutsches Elektronen-Synchrotron (DESY))

  • I. Shevchuk

    (Deutsches Elektronen-Synchrotron (DESY))

  • C. Svetina

    (Paul Scherrer Institut)

  • P. Walter

    (Deutsches Elektronen-Synchrotron (DESY)
    SLAC National Accelerator Laboratory)

  • M. Zangrando

    (Elettra-Sincrotrone Trieste SCpA
    Lab Nazl TASC)

  • J. Viefhaus

    (Deutsches Elektronen-Synchrotron (DESY))

  • A. N. Grum-Grzhimailo

    (European XFEL GmbH
    Lomonosov Moscow State University)

  • M. Meyer

    (European XFEL GmbH)

Abstract

Short wavelength free-electron lasers (FELs), providing pulses of ultrahigh photon intensity, have revolutionized spectroscopy on ionic targets. Their exceptional photon flux enables multiple photon absorptions within a single femtosecond pulse, which in turn allows for deep insights into the photoionization process itself as well as into evolving ionic states of a target. Here we employ ultraintense pulses from the FEL FERMI to spectroscopically investigate the sequential emission of electrons from gaseous, atomic argon in the neutral as well as the ionic ground state. A pronounced forward-backward symmetry breaking of the angularly resolved emission patterns with respect to the light propagation direction is experimentally observed and theoretically explained for the region of the Cooper minimum, where the asymmetry of electron emission is strongly enhanced. These findings aim to originate a better understanding of the fundamentals of photon momentum transfer in ionic matter.

Suggested Citation

  • M. Ilchen & G. Hartmann & E. V. Gryzlova & A. Achner & E. Allaria & A. Beckmann & M. Braune & J. Buck & C. Callegari & R. N. Coffee & R. Cucini & M. Danailov & A. Fanis & A. Demidovich & E. Ferrari & , 2018. "Symmetry breakdown of electron emission in extreme ultraviolet photoionization of argon," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-07152-7
    DOI: 10.1038/s41467-018-07152-7
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