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Angular correlations in the sequential two-photon double ionisation of atomic xenon

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, , Citation S Fritzsche et al 2012 J. Phys.: Conf. Ser. 388 032006 DOI 10.1088/1742-6596/388/3/032006

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1 Gesellschaft für Schwerionenforschung (GSI), D-64291 Darmstadt, Germany

2 Frankfurt Institute for Advanced Studies, D-60438 Frankfurt am Main, Germany

3 Institute of Nuclear Physics, Moscow State University, 119991 Moscow, Russia

4 I. Institut für Theoretische Physik, Universität Hamburg, D-20355 Hamburg, Germany

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1742-6596/388/3/032006

Abstract

The sequential two-photon double ionization has been analyzed for the 4d electrons of atomic xenon in the region of the giant resonance and beyond (70–200 eV), for which intense FEL radiation is available at the free electron laser FLASH. The 4d vacancies in xenon couple strongly to the autoionization continuum with lifetimes of only a few fs, and their Auger decay thus competes with the subsequent (second-and higher-step) photoionization in typical FEL pulses.

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10.1088/1742-6596/388/3/032006