Vibrational deactivation of O3 molecules in gas mixtures. II.

Experimental measurements of the rate constants for vibrational deactivation of O3 by O3, O2, CO2, H2, D2, CH4, N2, He, Ar, SF6, CH3Cl, CH2Cl2, CCl4, and C2H2 are presented. Vibrational relaxation of O3 is shown to follow the sequence (1) rapid V → V intermode coupling between the ν1 and ν3 modes, (2) a slower coupling of the ν1, ν3 modes to the ν2 mode, and (3) V → T relaxation through the O3(010) level. The results are described in terms of a simple analytic model for vibrational relaxation of O3.