Vibrational Energy Exchange Between H2(V=1) and D2, N2,HCl,and CO2.

摘要

The vibrational relaxation of H2(v = 1) by D2, N2 HCl, and CO2 was studied at 295 K by a laser-induced fluorescence technique. HF added in small quantities to the gas mixtures and vibrationally excited by a pulsed HF TEA laser produced H2(v = 1) by V-V transfer; HF also served as the tracer for H2(v = 1). The results were interpreted to be primarily V-V rates. The data for D2 and N2 were correlated with the V-V exchange probabilities for other diatom-diatom collisions by the parameter micrometer (1/2) delta E, where micrometer is the reduced mass of the collision partners and delta E the energy mismatch. This parameter also correlates V-V exchange probabilities for CO2-diatom collisions. A separate correlation of V-V exchange probabilities for hydrogen halide-homonuclear diatom collisions was obtained by plotting the probabilities versus delta E/h nu.