Vol. 36, issue 12, article # 2

Abstract:

Carbon dioxide absorption broadened by argon is studied on the basis of the asymptotic line wing theory. The line shape parameters concerned with the classical potential governing the center-of-mass motion and the quantum intermolecular interaction potential are found. The temperature dependence of the CO₂–Ar absorption beyond the 4.3 mm band edge is explained through changes in the classical potential describing the temperature behavior of the second virial coefficient in the temperature region under study.

Keywords:

carbon dioxide, the Ar broadening, spectral line wings, second virial coefficient

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