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A: Fachverband Atomphysik
A 34: Poster II
A 34.54: Poster
Donnerstag, 5. März 2009, 16:30–19:00, VMP 9 Poster
Angular correlations in sequential two-photon double ionization: A theoretical analysis — •Stephan Fritzsche1,2, Alexei Grum–Grzhimailo3, and Nicolai Kabachnik3 — 1Frankfurt Institute for Advanced Studies — 2GSI Helmholtzzentrum für Schwerionenforschung GmbH — 3Institute of Nuclear Physics, Moscow State University
Recent experiments with intense ultraviolet (XUV) radiation sources, such
as high harmonics or free electrons lasers, has opened the pathway for studying
a variety of non-linear processes with atoms and molecules in the XUV regime.
Among these, the two-photon double ionization (TPDI) has attracted much
interest since it enables one to explore in detail the transition from a
‘sequential’ towards the ‘simultaneous’ emission of two electrons. In this
contribution, the sequential TPDI is analyzed for the np2 (n=2,3)
ionization of noble gas atoms. Theoretical results [1] are shown in different
computational models and compared with recent experiments. In addition,
we also analyzed the angular correlation function, as measured by
experiment [2], if the two photoelectrons are detected
angle-resolved and in coincidence.
S. Fritzsche et al., J. Phys. B 41 (2008) 165601.
M. Kurka et al., submitted (2008).