Diffusion of vibrationally excited molecules

Gordon Fujimoto*, Abraham Nitzan, Eric Weitz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


A treatment is presented for the effect of intermolecular vibrational energy transfer on the diffusion coefficient of vibrationally excited molecules. An analytic treatment based on random walk statistics and a Monte Carlo type calculation have been performed. Both methods yield very similar results which correlate well with existing experimental studies. A hard sphere collision model is treated extensively with comparisons made to other internmolecular potentials. The results support the involvement of long range energy transfer in V → V interactions. The effect of temeprature on the diffusion coefficient of vibrationally excited molecules is calculated, with applications to the CO*2CO2 system.

Original languageEnglish
Pages (from-to)217-225
Number of pages9
JournalChemical Physics
Issue number2
StatePublished - 1 Jul 1976
Externally publishedYes


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