Reaction dynamics of O( 1 D)+ H 2 , D 2 , and HD: Direct evidence for the elusive abstraction pathway and the estimation of its branching

Yen Tsung Hsu, Jeng-Han Wang, Kopin Liu

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The dependencies of the integral cross sections for the title reactions on collision energies were determined from 0.6 kcal/mol to nearly 6 kcal/mol. The result provides, for the first time, direct and unambiguous experimental evidence for the existence of an abstraction pathway, in addition to the widely accepted inserted one. A reaction barrier of about 1.8 kcal/mol was found for this elusive abstraction channel. The branching of these two microscopic pathways was estimated. An intriguing H/D isotope effect was revealed, which called for further studies.

Original languageEnglish
Pages (from-to)2351-2356
Number of pages6
JournalJournal of Chemical Physics
Issue number7
Publication statusPublished - 1997 Aug 15


ASJC Scopus subject areas

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

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