Partial photoionization cross sections and angular distributions for double excitation of helium up to the N=13 threshold

A. Czasch; M. Schöffler; M. Hattass; S. Schössler; T. Jahnke; T. Weber; A. Staudte; J. Titze; C. Wimmer; S. Kammer; M. Weckenbrock; S. Voss; R. Grisenti; O. Jagutzki; L. Schmidt; H. Schmidt-Böcking; R. Dörner; J. Rost; T. Schneider; C-N Liu; I. Bray; A. Kheifets; K. Bartschat

doi:10.1103/PhysRevLett.95.243003

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Partial photoionization cross sections and angular distributions for double excitation of helium up to the N=13 threshold

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Partial photoionization cross sections and angular distributions for double excitation of helium up to the N=13 threshold

A. Czasch, M. Schöffler, M. Hattass, S. Schössler, T. Jahnke, T. Weber, A. Staudte, J. Titze, C. Wimmer, S. Kammer, …

Physical Review Letters, Vol.95(24)

2005

DOI: https://doi.org/10.1103/PhysRevLett.95.243003

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Abstract

Partial photoionization cross sections σN(Eγ) and photoelectron angular distributions βN(Eγ) were measured for the final ionic states He+(N>4) in the region between the N=8 and N=13 thresholds (Eγ>78.155 eV) using the cold target recoil ion momentum spectroscopy technique (COLTRIMS). Comparison of the experimental data with two independent sets of theoretical predictions reveals disagreement for the branching ratios to the various HeN+ states. The angular distributions just below the double ionization threshold suggest an excitation process for highly excited N states similar to the Wannier mechanism for double ionization.

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Title: Partial photoionization cross sections and angular distributions for double excitation of helium up to the N=13 threshold
Authors/Creators: A. Czasch (Author/Creator) - Goethe University Frankfurt
M. Schöffler (Author/Creator)
M. Hattass (Author/Creator)
S. Schössler (Author/Creator)
T. Jahnke (Author/Creator)
T. Weber (Author/Creator)
A. Staudte (Author/Creator)
J. Titze (Author/Creator)
C. Wimmer (Author/Creator)
S. Kammer (Author/Creator)
M. Weckenbrock (Author/Creator)
S. Voss (Author/Creator)
R. Grisenti (Author/Creator)
O. Jagutzki (Author/Creator)
L. Schmidt (Author/Creator)
H. Schmidt-Böcking (Author/Creator)
R. Dörner (Author/Creator)
J. Rost (Author/Creator) - Max Planck Institute for the Physics of Complex Systems
T. Schneider (Author/Creator) - Max Planck Institute for the Physics of Complex Systems
C-N Liu (Author/Creator)
I. Bray (Author/Creator)
A. Kheifets (Author/Creator)
K. Bartschat (Author/Creator)
Publication Details: Physical Review Letters, Vol.95(24)
Publisher: American Physical Society
Identifiers: 991005544838707891
Murdoch Affiliation: Murdoch University
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 2 Chemistry; 2.15 Physical Chemistry; 2.15.664 Dissociative Electron Attachment
Web Of Science research areas: Physics, Multidisciplinary
ESI research areas: Physics