Journal
PHYSICAL REVIEW LETTERS
Volume 110, Issue 17, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.173005
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Funding
- X-ray Free Electron Laser Utilization Research Project
- X-ray Free Electron Laser Priority Strategy Program of the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT)
- Japan Society for the Promotion of Science (JSPS) [21244062, 23241033]
- MEXT [22740264]
- Proposal Program of SACLA Experimental Instruments of RIKEN
- IMRAM project
- Swedish Research Council (VR)
- Swedish Foundation for Strategic Research (SSF)
- [2012A8036]
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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. DOI: 10.1103/PhysRevLett.110.173005
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