The role of the anisotropic interaction on collision induced absorption of systems containing linear molecules: The CO < inf> 2 -Ar case

Document Type

Article

Publication Date

1-1-1993

Abstract

Numerical calculations are presented of spectral moments of collision induced absorption (CIA) coefficient of CO2-Ar mixtures at various temperatures. Three spherical components have been used for the induced dipole moment all of which arise from pure multipolar induction. The calculations have been performed with six different potentials which differ with respect to the amount of anisotropy. The comparison of experimental and numerical results shows that the potential proposed by Preston and Pack [J. Chem. Phys. 66, 2480 (1977)] is the most suitable to describe CIA spectra. In addition, it is shown that the role of the anisotropy of the potential with regard to its contribution to the spectral moments, particularly the amount of mixing of dipole components of different symmetry, cannot be neglected. © 1993 American Institute of Physics.

Publication Title

The Journal of Chemical Physics

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