Abstract

The relaxation kinetics of N 2O and CO 2 vibrationally excited molecules (VEM) in two-phase gas-cluster systems was investigated under conditions of supersonic expansion with condensation. The catalytic effect of clusters on the vibrational relaxation rate was revealed. The relaxation rate of clustered VEM, R c, and the probability of relaxation of VEM per collision with a cluster, P , as functions of the average number of molecules in a cluster, N , were obtained. Values of R c and P increase rapidly with increasing N , and at N = constant they decrease with decreasing cluster temperature.

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