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Title: Resonant dissociative excitation and vibrational excitation of He{sub 2}{sup +}

Abstract

We present calculated cross sections for resonance-enhanced dissociative excitation and vibrational excitation in the 1-15-eV energy region. In this region, the cross sections are dominated by a series of doubly excited resonance states converging to the first excited state of the ion. The resonance states and parameters were previously calculated using the complex Kohn variational method and are used as input to a time-dependent treatment of the nuclear dynamics. The dissociative recombination cross section for the {sup 4}He {sup 4}He{sup +} ion is calculated and compared to the previously published cross section for the mixed isotopologue. The calculated cross sections for dissociative excitation and vibrational excitation, including excitation into individual vibrational states, are reported for the {sup 3}He {sup 4}He{sup +} and {sup 4}He {sup 4}He{sup +} molecular ions and compared to recent experiments.

Authors:
;  [1]
  1. Department of Applied Science, University of California at Davis, Davis, California 95616 (United States)
Publication Date:
OSTI Identifier:
20982524
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.75.052706; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; APPROXIMATIONS; CATIONS; CROSS SECTIONS; DISSOCIATION; EV RANGE 01-10; EXCITATION; HELIUM 3; HELIUM 4; HELIUM IONS; MOLECULAR IONS; RECOMBINATION; RESONANCE; TIME DEPENDENCE; VARIATIONAL METHODS; VIBRATIONAL STATES

Citation Formats

Royal, J., and Orel, A. E.. Resonant dissociative excitation and vibrational excitation of He{sub 2}{sup +}. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.052706.
Royal, J., & Orel, A. E.. Resonant dissociative excitation and vibrational excitation of He{sub 2}{sup +}. United States. doi:10.1103/PHYSREVA.75.052706.
Royal, J., and Orel, A. E.. Tue . "Resonant dissociative excitation and vibrational excitation of He{sub 2}{sup +}". United States. doi:10.1103/PHYSREVA.75.052706.
@article{osti_20982524,
title = {Resonant dissociative excitation and vibrational excitation of He{sub 2}{sup +}},
author = {Royal, J. and Orel, A. E.},
abstractNote = {We present calculated cross sections for resonance-enhanced dissociative excitation and vibrational excitation in the 1-15-eV energy region. In this region, the cross sections are dominated by a series of doubly excited resonance states converging to the first excited state of the ion. The resonance states and parameters were previously calculated using the complex Kohn variational method and are used as input to a time-dependent treatment of the nuclear dynamics. The dissociative recombination cross section for the {sup 4}He {sup 4}He{sup +} ion is calculated and compared to the previously published cross section for the mixed isotopologue. The calculated cross sections for dissociative excitation and vibrational excitation, including excitation into individual vibrational states, are reported for the {sup 3}He {sup 4}He{sup +} and {sup 4}He {sup 4}He{sup +} molecular ions and compared to recent experiments.},
doi = {10.1103/PHYSREVA.75.052706},
journal = {Physical Review. A},
number = 5,
volume = 75,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}