The kinetics of the reaction Oplus;N2plus;3.3 eVrarr;NOplus;N were investigated under conditions where the vibrational temperature of the nitrogen was less than the translational temperature. The formation of NO behind incident shock waves in dilute O3sngbnd;N2mixtures was studied over the temperature range 3100ndash;6400deg;K with initial pressures of 2ndash;25 torr. In the shock front O3rarr;Oplus;O2and the reaction of the O with N2is then ratehyphen;limiting, followed by the fast reaction Nplus;O2rarr;NOplus;O. The NO was monitored in emission at 5.3mgr;and the initial slopes were compared to theoretical calculations which included vibrational relaxation processes. The radiation rose linearly from the shock front with no incubation in accord with the theoretical calculations employing only translational energy to determine the fraction of collisions whose energy was above the endothermicity of reaction.
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