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Signatures of autoionization in the angular electron distribution in two-photon double ionization of Ar

Augustin, S.; Schulz, M.; Schmid, G.; Schnorr, K.; Gryzlova, E. V.; Lindenblatt, H.; Meister, S.; Liu, Y. F.; Trost, F. and Fechner, L., et al. (2018) In Physical Review A 98(3).
Abstract

A kinematically complete experiment on two-photon double ionization of Ar by free-electron laser radiation with a photon energy of 27.93 eV was performed. The electron energy spectra show that double ionization is dominated by the sequential process. Comparison of the electron angular distributions to our data for single ionization and to theory confirms that even in the sequential process the electrons from both ionization steps are correlated with each other through polarization of the intermediate Ar+ state. Furthermore, a very important role of autoionization in both ionization steps is found.

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Contribution to journal
publication status
published
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Physical Review A
volume
98
issue
3
publisher
American Physical Society
external identifiers
  • scopus:85053672502
ISSN
2469-9926
DOI
10.1103/PhysRevA.98.033408
language
English
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yes
id
368ee0da-9a47-469c-8a57-e806d95f6665
date added to LUP
2018-10-11 08:53:12
date last changed
2019-11-05 05:04:03
@article{368ee0da-9a47-469c-8a57-e806d95f6665,
  abstract     = {<p>A kinematically complete experiment on two-photon double ionization of Ar by free-electron laser radiation with a photon energy of 27.93 eV was performed. The electron energy spectra show that double ionization is dominated by the sequential process. Comparison of the electron angular distributions to our data for single ionization and to theory confirms that even in the sequential process the electrons from both ionization steps are correlated with each other through polarization of the intermediate Ar+ state. Furthermore, a very important role of autoionization in both ionization steps is found.</p>},
  articleno    = {033408},
  author       = {Augustin, S. and Schulz, M. and Schmid, G. and Schnorr, K. and Gryzlova, E. V. and Lindenblatt, H. and Meister, S. and Liu, Y. F. and Trost, F. and Fechner, L. and Grum-Grzhimailo, A. N. and Burkov, S. M. and Braune, M. and Treusch, R. and Gisselbrecht, M. and Schröter, C. D. and Pfeifer, T. and Moshammer, R.},
  issn         = {2469-9926},
  language     = {eng},
  month        = {09},
  number       = {3},
  publisher    = {American Physical Society},
  series       = {Physical Review A},
  title        = {Signatures of autoionization in the angular electron distribution in two-photon double ionization of Ar},
  url          = {http://dx.doi.org/10.1103/PhysRevA.98.033408},
  volume       = {98},
  year         = {2018},
}