Franck-Condon analysis of predissociations in the lower valence states of the NH radical |
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Authors: | William Hayden Smith Donald K. Hsu |
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Affiliation: | Department of Chemistry, McDonnell Center for Space Sciences Washington University, St. Louis, MO 63130, U.S.A.;Department of Physics and Computer Sciences, St. Peter''s College, Jersey City, NJ 07306, U.S.A. |
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Abstract: | The origins of the predissociations observed by Smith, Brzozowski, and Erman for the A3Πand c1Π states of NH have been investigated via a Franck-Condon analysis. It is shown that the measured variation of the predissociation probability is is proportional to the Franck-Condon densities between the bound rotational levels of the A and c states and the vibrational continuum of a 5Σ- state arising from the ground state asympote. Similar calculations for the X3Σ- ground state vibrational continuum, the only other state with a lower dissociation limit, showed that state to be ineffective in producing the observed predissociation. |
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