Penning and associative ionization of triplet metastable helium atoms

B. J. Garrison, W. H. Miller, H. F. Schaefer

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Potential energy curves for the 1Σg +, 3Σu+, and 5Σg+ states which arise from two triplet metastable helium atoms (ls 2s3S) have been calculated by a large configuration interaction expansion. From the potential curves for the 1Σg+ and 3Σ u+ autoionizing states, cross section for Penning and associative ionization have been calculated; the total ionization cross section for thermal energy (0.026 eV) collisions, for example, is computed to be 94 Å2. In this low energy region the orbiting model is seen to be adequate for determining the total ionization cross section, but not the more specific cross sections.

Original languageEnglish (US)
Pages (from-to)3182-3192
Number of pages11
JournalThe Journal of chemical physics
StatePublished - Dec 1 1973

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Helium
metastable atoms
ionization cross sections
helium atoms
Ionization
ionization
Atoms
cross sections
curves
thermal energy
configuration interaction
potential energy
Potential energy
Thermal energy
collisions
expansion
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Garrison, B. J., Miller, W. H., & Schaefer, H. F. (1973). Penning and associative ionization of triplet metastable helium atoms. The Journal of chemical physics, 3182-3192.
Garrison, B. J. ; Miller, W. H. ; Schaefer, H. F. / Penning and associative ionization of triplet metastable helium atoms. In: The Journal of chemical physics. 1973 ; pp. 3182-3192.
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Penning and associative ionization of triplet metastable helium atoms. / Garrison, B. J.; Miller, W. H.; Schaefer, H. F.

In: The Journal of chemical physics, 01.12.1973, p. 3182-3192.

Research output: Contribution to journalArticle

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