Deep Inner-Shell Multiphoton Ionization by Intense X-Ray Free-Electron Laser Pulses
2013 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 110, no 17, 173005Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2013. Vol. 110, no 17, 173005
IdentifiersURN: urn:nbn:se:uu:diva-201254DOI: 10.1103/PhysRevLett.110.173005ISI: 000318212800009OAI: oai:DiVA.org:uu-201254DiVA: diva2:626806