Low velocity experiments for collision energy dependence of partial ionization cross-sections of C 2H 2 with He*(2 3S) metastable atoms

Takuya Horio, Takuro Hatamoto, Naoki Kishimoto, Koichi Ohno

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Collision energy dependence of partial ionization cross-sections of C 2H 2 by collision with He*(2 3S) metastable atoms in low collision energy regions (20-50 meV) was first observed using a liquid N 2 cooled discharge nozzle source. Negative collision energy dependence was found for ionizations from σ CH molecular orbitals, while positive collision energy dependence has been obtained in higher collision energy region of 100-360 meV. These results can be explained by the anisotropic interaction of the present system, and especially the low collision energy feature should indicate that a shallow attractive well exists around hydrogen atom.

Original languageEnglish
Pages (from-to)242-246
Number of pages5
JournalChemical Physics Letters
Volume397
Issue number1-3
DOIs
Publication statusPublished - 2004 Oct 11

ASJC Scopus subject areas

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

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