State-to-state vibrational energy transfer from 61 benzene induced by low-energy collisions with nitrogen: temperature-dependent propensities

Abstract

State-to-state rate constants for vibrational energy transfer from the 6 1 level of S 1 benzene induced by collisions with N 2 have been measured as a function of temperature in the range 41-13 K in a supersonic free jet expansion. It is found that there is a change in the propensity for transfer into the destination channels as the temperature is decreased. The efficiency of transfer to the 16 2 level increases by a factor of ∼2 compared with transfer to the spectrally unresolved pair of levels 11 1 /16 1 with the decrease in temperature over this range