A three dimensional quantum reactive scattering study of the I+HI reaction and of the IHI- photodetachment spectrum

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In this paper, we present the results of coupled channel hyperspherical reactive scattering calculations on the reaction I + HI→IH + I using a semiempirical potential surface. Only the J = 0 partial wave is considered. The bimolecular reaction probability is found to exhibit two sharp resonant peaks at energies below threshold for direct reaction. The resonances are associated with transition state quantum numbers (ν1ν2ν 3) = (100) and (200), and their energies are in excellent agreement with the result of L2 calculations due to Clary and Connor, and to Bowman and Gazdy. At higher energy the reaction is dominated by rotational threshold effects, and then below the HI(ν = 1) energetic threshold, additional resonances are found which correspond to quantum numbers (002), (102), (202), and (302). Franck-Condon factors associated with photodetachment of IHI- have also been calculated, and these show mainly direct scattering threshold behavior at low energies (E

Original languageEnglish
Pages (from-to)4847-4854
Number of pages8
JournalJournal of Chemical Physics
Issue number9
Publication statusPublished - 1989


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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