A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Deep Inner-Shell Multiphoton Ionization by Intense X-Ray Free-Electron Laser Pulses
Tekijät: Fukuzawa H, Son S, Motomura K, Mondal S, Nagaya K, Wada S, Liu X, Feifel R, Tachibana T, Ito Y, Kimura M, Sakai T, Matsunami K, Hayashita H, Kajikawa J, Johnsson P, Siano M, Kukk E, Rudek B, Erk B, Foucar L, Robert E, Miron C, Tono K, Inubushi Y, Hatsui T, Yabashi M, Yao M, Santra R, Ueda K
Julkaisuvuosi: 2013
Journal: Physical Review Letters
Tietokannassa oleva lehden nimi: Physical Review Letters
Numero sarjassa: 17
Vuosikerta: 110
Numero: 17
Sivujen määrä: 5
ISSN: 0031-9007
DOI: https://doi.org/10.1103/PhysRevLett.110.173005
Verkko-osoite: http://link.aps.org/doi/10.1103/PhysRevLett.110.173005
Tiivistelmä
We have investigated multiphoton multiple ionization dynamics of xenon atoms using a new x-ray free-electron laser facility, {SPring-8} Angstrom Compact free electron {LAser} ({SACLA)} in Japan, and identified that Xen+ with n up to 26 is produced at a photon energy of 5.5 {keV.} The observed high charge states (n≥24) are produced via five-photon absorption, evidencing the occurrence of multiphoton absorption involving deep inner shells. A newly developed theoretical model, which shows good agreement with the experiment, elucidates the complex pathways of sequential electronic decay cascades accessible in heavy atoms. The present study of heavy-atom ionization dynamics in high-intensity hard-x-ray pulses makes a step forward towards molecular structure determination with x-ray free-electron lasers.
We have investigated multiphoton multiple ionization dynamics of xenon atoms using a new x-ray free-electron laser facility, {SPring-8} Angstrom Compact free electron {LAser} ({SACLA)} in Japan, and identified that Xen+ with n up to 26 is produced at a photon energy of 5.5 {keV.} The observed high charge states (n≥24) are produced via five-photon absorption, evidencing the occurrence of multiphoton absorption involving deep inner shells. A newly developed theoretical model, which shows good agreement with the experiment, elucidates the complex pathways of sequential electronic decay cascades accessible in heavy atoms. The present study of heavy-atom ionization dynamics in high-intensity hard-x-ray pulses makes a step forward towards molecular structure determination with x-ray free-electron lasers.
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