TEMPERATURE DEPENDENCE OF VIBRATIONAL RELAXATION OF N-2 BY O-2 IN LIQUID N-2 ALONG THE COEXISTENCE CURVE

摘要

The temperature dependence of vibrational relaxation rates of N-2(v=1) by O-2 in liquid N-2 has been studied at several temperatures along the coexistence curve between 80 and 120 K. A small amount of CO was added to the N-2-O-2 mixture as a pump and a probe. A CO laser was used to excite CO in solution and its fluorescence was monitored to obtain the rate of vibrational energy transfer. The liquid-phase rate constants k(l) were compared with the gas-phase constants k(g) at the same temperatures and found to be essentially equal. This result is in reasonable agreement with the predictions of the isolated binary collision model. (C) 1996 American Institute of Physics. [References: 29]