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          Institute: MPI für Kernphysik     Collection: Physics with Ultrashort Laser Pulses     Display Documents

ID: 441469.0, MPI für Kernphysik / Physics with Ultrashort Laser Pulses
Two-photon double ionization of Ne by free-electron laser radiation: a kinematically complete experiment
Authors:Kurka, M.; Rudenko, A.; Foucar, L.; Kühnel, K. U.; Jiang, Y. H.; Ergler, T.; Havermeier, T.; Smolarski, M.; Schössler, S.; Cole, K.; Schöffler, M.; Dörner, R.; Gensch, M.; Düsterer, S.; Treusch, R.; Fritzsche, S.; Grum-Grzhimailo, A. N.; Gryzlova, E. V.; Kabachnik, N. M.; Schröter, C. D.; Moshammer, R.; Ullrich, J.
Date of Publication (YYYY-MM-DD):2009-06-24
Title of Journal:Journal of Physics B: Atomic, Molecular and Optical Physics
Journal Abbrev.:J. Phys. B
Issue / Number:14
Start Page:1
End Page:5
Sequence Number of Article:141002
Copyright:© 2009 IOP Publishing Ltd
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We present kinematically complete data on two-photon double ionization of Ne induced by
short (∼25 fs) intense (∼5 × 1013 W cm−2) free-electron laser pulses at 44 eV. The observed
electron energy spectrum points to the dominance of ‘sequential’ ionization. We analyse
state-selective angular distributions as well as the two-electron angular correlation function,
and suggest a method to determine the time delay between both ionization steps. The
measured angular asymmetry ( ß-) parameters significantly deviate from the results of an
earlier non-coincident experiment providing benchmark data for theory.
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group of J. Ullrich/Strong-Fields Physics (R. Moshammer)
External Affiliations:Max-Planck Advanced Study Group at CFEL, 22607 Hamburg, Germany
Institut f¨ur Kernphysik, Universit¨at Frankfurt, 60438 Frankfurt, Germany
DESY, Notkestrasse 85, 22607 Hamburg, Germany
Department of Physical Sciences, University of Oulu, Fin-90014 Oulu, Finland
GSI Helmholtzzentrum f¨ur Schwerionenforschung, 64291 Darmstadt, Germany
Institute of Nuclear Physics, Moscow State University, 119991 Moscow, Russia
Institut f¨ur Experimentalphysik, Universit¨at Hamburg, 22761 Hamburg, Germany
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