Vibrational relaxation of diatomic molecules in gases and liquids

Bruce J. Berne*, Joshua Jortner, Roy Gordon

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


When a diatomic molecule in a vibrationally excited state is placed in a host fluid it can lose a vibrational quantum by either radiative or nonradiative processes. In this article the rate of nonradiative vibrational transitions is expressed in terms of the rotational-kinetic-energy autocorrelation function. An interpolative approximation is made for the autocorrelation function and the vibrational relaxation time is computed. Good agreement with measurements of gaseous systems is obtained.

Original languageEnglish
Pages (from-to)1600-1608
Number of pages9
JournalThe Journal of Chemical Physics
Issue number5
StatePublished - 1967
Externally publishedYes


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