Abstract
The frequency of vibration and the interatomic distance are considered as variational parameters in an approximate expression for the free energy of a diatomic molecule. Application of the Bogolyubov inequality allows one to find the dependence of these parameters on temperature. Calculations are given for the molecules HF and HgH.
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A. A. Zaitsev, Izv. Vyssh. Uchebn. Zaved., Fiz.,2, 70 (1962).
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 1, pp. 6–8, January, 1982.
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Zaitsev, A.A., Demin, S.N. Application of the Bogolyubov inequality for the calculation of the thermodynamic properties of diatomic molecules. Soviet Physics Journal 25, 4–7 (1982). https://doi.org/10.1007/BF00893863
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DOI: https://doi.org/10.1007/BF00893863