%0 Journal Article
%A Gerken, N.
%A Klumpp, S.
%A Sorokin, A. A.
%A Tiedtke, K.
%A Richter, M.
%A Bürk, V.
%A Mertens, K.
%A Juranić, P.
%A Martins, M.
%T Time-Dependent Multiphoton Ionization of Xenon in the Soft-X-Ray Regime
%J Physical review letters
%V 112
%N 21
%@ 1079-7114
%C College Park, Md.
%I APS
%M DESY-2014-03781
%P 213002
%D 2014
%Z OA
%X The time-dependent multiphoton ionization of xenon atoms is studied with femtosecond pulses in the excitation range of the 4d giant resonance at the photon energy of 93 eV. Benefiting from a new operation mode of the free electron laser FLASH, the measurements are performed with varying pulse durations. A strong dependence of the ion charge distribution on the pulse duration allows the different multiphoton mechanisms behind the multiple photoionization of xenon to be disentangled up to a charge state of Xe10+. The results up to Xe8+ are well explained by sequences of single photon, multiphoton, and Auger processes, but higher charge state generation suggests the need for collective electron multiphoton excitations.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000338034400004
%R 10.1103/PhysRevLett.112.213002
%U https://bib-pubdb1.desy.de/record/172530