Abstract

Time-dependent vibrational relaxation calculations are presented for anharmonic diatomic molecules in rapidly expanding flows. Specific calculations in CO–Ar mixtures predict highly distorted vibrational distributions as a result of anharmonic effects in the intramolecular exchange of vibrational energy. Further calculations are presented for N₂–CO–Ar mixtures which demonstrate the effect on the vibrational distributions of the nonresonant transfer of vibrational energy between different anharmonic molecules. It appears possible to achieve high vibrational temperatures and hence useful small signal gains on partial inversions in upper vibrational levels.

© 1971 Optical Society of America

Energy Distribution Among Reaction Products. III: The Method of Measured Relaxation Applied to H + Cl₂

P. D. Pacey and J. C. Polanyi
Appl. Opt. 10(8) 1725-1737 (1971)

Quenching of Infrared Chemiluminescence. 1: The Rates of De-Excitation of CO (4 ≤ v ≤ 13) by He, CO, NO, N₂, O₂, OCS, N₂O, and CO₂

G. Hancock and I. W. M. Smith
Appl. Opt. 10(8) 1827-1842 (1971)

Vibration-Electronic Coupling in the Quenching of Electronically Excited Alkali Atoms by Diatomics

E. R. Fisher and G. K. Smith
Appl. Opt. 10(8) 1803-1813 (1971)

Infrared-Emission Studies of Electronic-to-Vibrational Energy Transfer. IV: Hg* + HF

H. Heydtmann, J. C. Polanyi, and R. T. Taguchi
Appl. Opt. 10(8) 1755-1759 (1971)

Population Inversion and Energy Transfer in CO Lasers

J. T. Yardley
Appl. Opt. 10(8) 1760-1767 (1971)