Sequential two-photon double ionization of noble gases by circularly polarized XUV radiation

Photoelectron angular distributions (PADs) and angular correlations between two emitted electrons in sequential two-photon double ionization (2PDI) of atoms by circularly polarized radiation are studied theoretically. In particular, the sequential 2PDI of the valence shell in noble gas atoms (neon,...

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Bibliographic Details
Published in:Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2014-10, Vol.47 (19), p.195601-11
Main Authors: Gryzlova, E V, Grum-Grzhimailo, A N, Kuzmina, E I, Strakhova, S I
Format: Article
Language:English
Subjects:
Angular correlation
Angular distribution
angular distribution of photoelectrons
Circularity
circularly polarized radiation
free electron lasers
Ionization
noble gases
non-dipole effects
Photons
Polarized radiation
Rare gases
Shells
two-photon double ionization
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Summary:Photoelectron angular distributions (PADs) and angular correlations between two emitted electrons in sequential two-photon double ionization (2PDI) of atoms by circularly polarized radiation are studied theoretically. In particular, the sequential 2PDI of the valence shell in noble gas atoms (neon, argon, krypton) is analyzed, accounting for the first-order corrections to the dipole approximation. Due to different selection rules in ionization transitions, the circular polarization of photons causes some new features of the cross sections, PADs and angular correlation functions in comparison with the case of linearly polarized photons.
ISSN:0953-4075
1361-6455
DOI:10.1088/0953-4075/47/19/195601