Abstract
The complex nature of the temperature dependence of the absorption coefficient beyond the edge of the CO2 4.3 μm band — the change of the sign of the derivative of the absorption coefficient with respect to the temperature near the edge and in the remote wing of the band — is explained on the basis of the theory of spectrum line wings. The first change in the sign is due to the temperature dependence of the classical potential of intermolecular interaction; the second depends mainly on the difference in the quantum energies of molecule interaction. Therefore, a study of the dependence of the absorption coefficient on the temperature in the band wings provides information about the nature of the terms of the interacting molecules.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 12, pp. 42–45, December, 1987.
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Nesmelova, L.I., Rodimova, O.B. & Tvorogov, S.D. Nature of the temperature dependence of the absorption coefficient in the remote wing of the 4.3 μm CO2 band. Soviet Physics Journal 30, 1034–1036 (1987). https://doi.org/10.1007/BF00897916
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DOI: https://doi.org/10.1007/BF00897916