Effective Atom-Atom Potentials for H2O–He and H2O–Ar Systems


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An atom-atom interaction potential for the H2O–A system is proposed in a form that depends on the normal coordinates q of an H2O molecule. Vibrational and rotational corrections to the effective potential for H2O–He and H2O–Ar systems are calculated and their impact on the calculated broadening coefficients γ is analysed for the absorption lines of different vibrational H2O bands in the case of broadening by helium and argon. It is shown that excitation of the stretching modes of vibrations in the H2O molecule leads to an increase in the calculated broadening coefficients γ. Accounting for rotational corrections, γ increases by 15% for the lines with rotational quantum number Ka = 9 for the lower transition state in the case of broadening by He and by 4% when broadening by Ar.

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V. Starikov

Tomsk State University of Control Systems and Radio-Electronics; Tomsk Polytechnic University

编辑信件的主要联系方式.
Email: starikov@yandex.ru
俄罗斯联邦, Tomsk, 634050; Tomsk, 634050

T. Petrova

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch

Email: starikov@yandex.ru
俄罗斯联邦, Tomsk, 634055

A. Solodov

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch

Email: starikov@yandex.ru
俄罗斯联邦, Tomsk, 634055

A. Solodov

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch

Email: starikov@yandex.ru
俄罗斯联邦, Tomsk, 634055

V. Deichuli

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch; Tomsk State University

Email: starikov@yandex.ru
俄罗斯联邦, Tomsk, 634055; Tomsk, 634050

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