15min:

C. STAMP, R. D. G. PRASAD, P. G. GILLARD AND S. PADDI REDDY, Department of Physics and Physical Oceanography, Memorial University of Newfoundland, St. John's, NF, A1B 3X7, Canada.

Collision-induced infrared absorption spectra of the double vibrational transitions of H₂ (v=1 <- 0) + D₂ (v=1 <- 0) have been investigated in their binary mixtures in the spectral region 5900 - 7100 cm^-1. The spectra were recorded with a 2\,m absorption cell for partial densities of H₂ and N₂ in the range 60 to 315 and 100 to 315 amagat. respectively, at room temperature. The observed spectra are interpreted in terms of the following transitions: O₁(J) of H₂ + Q₁(J) of N₂; Q₁(J) of H₂ + O₁(J) of N₂; Q₁(J) of H₂ + Q₁(J) of N₂; Q₁(J) of H₂ + S₁(J) of N₂; S₁(J) of H₂ + Q₁(J) of N₂.

Analysis of the absorption profiles has been carried out. Similar experiments with binary mixtures of D₂ + N₂ are also in progress. The results of this work including the absorption coefficients, line-shape function, etc., will be presented.