An ab initio and experimental study of vibrational effects in low energy O ++C 2H 2 charge-transfer collisions

Kaori Fukuzawa, Toshio Matsushita, Keiji Morokuma, Dale J. Levandier, Yu Hui Chiu, Rainer A. Dressler, Edmond Murad, Anthony Midey, Skip Williams, Albert A. Viggiano

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

High-temperature guided-ion beam measurements were performed to examine the role of low-frequency acetylene bending modes in low energy charge-transfer collisions. A variable temperature-selected ion drift tube apparatus was used to measure thermal energy rate coefficients. The translational energy dependence of the charge-transfer cross sections in three differnt energy regions was also described. It was found that the charge-transfer cross sections decreased up to 0.5 eV, remained constant between 0.5 eV and 1.5 eV, and increased dramatically above 1.7 eV. The results indicated that the charge-transfer reactions occurred through nonadiabatic transitions between quartet and doublet states.

Original languageEnglish
Pages (from-to)3184-3194
Number of pages11
JournalJournal of Chemical Physics
Volume115
Issue number7
DOIs
Publication statusPublished - 2001 Aug 15
Externally publishedYes

ASJC Scopus subject areas

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

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