System-bath decomposition of the reaction path Hamiltonian. II. Rotationally inelastic reactive scattering of H+H2 in three dimensions

Steven D. Schwartz, William H. Miller

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

Earlier work of the authors [J. Chem. Phys. 77, 2378 (1982)] has shown how the reaction path Hamiltonian of Miller, Handy, and Adams [J. Chem. Phys. 72, 99 (1980)] can be divided into a "system" of the reaction coordinate and modes strongly coupled to it, plus a "bath" of more weakly coupled modes. Quantum mechanical perturbation theory was used to show how one can combine an exact description of the system dynamics with an approximate (perturbative) treatment of the effect of the bath. The present paper applies this approach to the 3d H+H2 reaction, where the two collinear degrees of freedom constitute the system, and the two bending modes the bath. Comparison with the accurate scattering calculations of Schatz and Kupermann [J. Chem. Phys. 65, 4668 (1976)] shows it to provide a good description of the coupling between bending (i.e., rotational) and collinear modes.

Original languageEnglish (US)
Pages (from-to)3759-3764
Number of pages6
JournalThe Journal of Chemical Physics
Volume79
Issue number8
DOIs
StatePublished - Jan 1 1983
Externally publishedYes

ASJC Scopus subject areas

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

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