Anharmonicity effects on vibrational predissociation

J. A. Beswick, Joshua Jortner

Research output: Contribution to journalArticlepeer-review


We study the effect of the anharmonicity of a normal diatomic molecule BC on the vibrational predissociation rates of a van der Waals molecule X…BC, where X is a rare-gas atom. The experimentally determined nonlinear dependence of vibrational predissociation rates of the HeI2 (B) molecule on the vibrational excitation of the Iz bond, is very well reproduced by a simple analytical model. The relevance of this model in determining potential parameters of the van der Waals interaction is discussed. Applicationto other systems are presented and the effect of the reduced mass for relative motion is examined.

Original languageEnglish
Pages (from-to)1137-1144
Number of pages8
JournalMolecular Physics
Issue number5
StatePublished - 10 Apr 1980


FundersFunder number
Université Pierre et Marie CurieUER 52


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