Alignment and orientation effects for the indirect ionization of CH3Cl in the |111〉 rotational state by fast electron impact

T. Kasai, T. Matsunami, H. Takahashi, T. Fukawa, H. Ohoyama, K. Kuwata

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The steric opacity function, which includes alignment and orientation effects, for the indirect ionization process of CH3Cl+ has been obtained and analyzed from the study of fast electron impact of the oriented CH3Cl molecule with the well-defined orientation of the |JKM〉 = |111〉 state. On the basis of a particle collision approximation for the projectile electron and the target molecular orbital electrons, both orientation and alignment dependences have been clarified by the ab initio calculations of the HOMO electron densities of the molecule. A good correlation between the site-specific ionization cross section and the cross section of the spatial distribution of 2e HOMO electrons of CH3Cl was confirmed.

Original languageEnglish
Pages (from-to)13597-13599
Number of pages3
JournalJournal of physical chemistry
Volume99
Issue number37
Publication statusPublished - 1995 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

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