Theory of collisional equilibration of a radiatively excited molecular gas

P. G. Harper

Research output: Contribution to journalArticle

Abstract

A theory for the statistical equilibration of the degenerate vibrational modes of a polyatomic molecule is presented. It is shown how combined radiative and bimolecular collisional development of the degenerate multimode system may be related to that of the single-mode system. Exact multimode rate equations are derived and used to demonstrate that for the ideal harmonic system only transient disturbances of quasithermal equilibrium are permitted. A model theory for the truncated harmonic system in terms of rate equations for the first and second population distribution moments is studied. A solution is presented and related to recent experimental studies of cyclobutanone.

Original languageEnglish
Article number015
Pages (from-to)3787-3796
Number of pages10
JournalJournal of Physics B: Atomic and Molecular Physics
Volume16
Issue number20
DOIs
Publication statusPublished - 1983

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molecular gases
harmonics
distribution moments
polyatomic molecules
vibration mode
disturbances

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Theory of collisional equilibration of a radiatively excited molecular gas. / Harper, P. G.

In: Journal of Physics B: Atomic and Molecular Physics, Vol. 16, No. 20, 015, 1983, p. 3787-3796.

Research output: Contribution to journalArticle

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AB - A theory for the statistical equilibration of the degenerate vibrational modes of a polyatomic molecule is presented. It is shown how combined radiative and bimolecular collisional development of the degenerate multimode system may be related to that of the single-mode system. Exact multimode rate equations are derived and used to demonstrate that for the ideal harmonic system only transient disturbances of quasithermal equilibrium are permitted. A model theory for the truncated harmonic system in terms of rate equations for the first and second population distribution moments is studied. A solution is presented and related to recent experimental studies of cyclobutanone.

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JF - Journal of Physics B: Atomic and Molecular Physics

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