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Near-threshold two-photon double ionization of Kr in the vacuum ultraviolet

Varvarezos, Lazaros ; Düsterer, Stefan ; Kiselev, Maksim D. ; Boll, Rebecca ; Bomme, Cedric ; De Fanis, Alberto ; Erk, Benjamin ; Passow, Christopher ; Burkov, Sergei M. and Hartmann, Gregor , et al. (2021) In Physical Review A 103(2).
Abstract

We report angle-resolved measurements on photoelectrons emitted upon near-threshold two-photon double ionization (TPDI) of Kr irradiated by free-electron laser (FEL) pulses. These photoelectron angular distributions (PADs) are compared with the results of semirelativistic R-matrix calculations. As reported by Augustin et al. [Phys. Rev. A 98, 033408 (2018)10.1103/PhysRevA.98.033408], it is found that the presence of autoionizing resonances within the bandwidth of the exciting FEL pulse strongly influences the PADs. In contrast to measurements on lower-Z targets such as Ne and Ar, the larger spin-orbit interaction, inherent in 4p-subshell hole states of Kr, permits us to resolve and study PADs associated with some of the fine-structure... (More)

We report angle-resolved measurements on photoelectrons emitted upon near-threshold two-photon double ionization (TPDI) of Kr irradiated by free-electron laser (FEL) pulses. These photoelectron angular distributions (PADs) are compared with the results of semirelativistic R-matrix calculations. As reported by Augustin et al. [Phys. Rev. A 98, 033408 (2018)10.1103/PhysRevA.98.033408], it is found that the presence of autoionizing resonances within the bandwidth of the exciting FEL pulse strongly influences the PADs. In contrast to measurements on lower-Z targets such as Ne and Ar, the larger spin-orbit interaction, inherent in 4p-subshell hole states of Kr, permits us to resolve and study PADs associated with some of the fine-structure components of the Kr+ and Kr2+ ions.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review A
volume
103
issue
2
article number
022832
publisher
American Physical Society
external identifiers
  • scopus:85101764600
ISSN
2469-9926
DOI
10.1103/PhysRevA.103.022832
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2021 American Physical Society.
id
98a3de71-4089-4bfc-96d6-fb2e02ed57d6
date added to LUP
2022-01-17 14:27:36
date last changed
2023-11-23 15:37:52
@article{98a3de71-4089-4bfc-96d6-fb2e02ed57d6,
  abstract     = {{<p>We report angle-resolved measurements on photoelectrons emitted upon near-threshold two-photon double ionization (TPDI) of Kr irradiated by free-electron laser (FEL) pulses. These photoelectron angular distributions (PADs) are compared with the results of semirelativistic R-matrix calculations. As reported by Augustin et al. [Phys. Rev. A 98, 033408 (2018)10.1103/PhysRevA.98.033408], it is found that the presence of autoionizing resonances within the bandwidth of the exciting FEL pulse strongly influences the PADs. In contrast to measurements on lower-Z targets such as Ne and Ar, the larger spin-orbit interaction, inherent in 4p-subshell hole states of Kr, permits us to resolve and study PADs associated with some of the fine-structure components of the Kr+ and Kr2+ ions.</p>}},
  author       = {{Varvarezos, Lazaros and Düsterer, Stefan and Kiselev, Maksim D. and Boll, Rebecca and Bomme, Cedric and De Fanis, Alberto and Erk, Benjamin and Passow, Christopher and Burkov, Sergei M. and Hartmann, Gregor and Ilchen, Markus and Johnsson, Per and Kelly, Thomas J. and Manschwetus, Bastian and Mazza, Tommaso and Meyer, Michael and Rompotis, Dimitrios and Zatsarinny, Oleg and Gryzlova, Elena V. and Grum-Grzhimailo, Alexei N. and Costello, John T.}},
  issn         = {{2469-9926}},
  language     = {{eng}},
  number       = {{2}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review A}},
  title        = {{Near-threshold two-photon double ionization of Kr in the vacuum ultraviolet}},
  url          = {{http://dx.doi.org/10.1103/PhysRevA.103.022832}},
  doi          = {{10.1103/PhysRevA.103.022832}},
  volume       = {{103}},
  year         = {{2021}},
}