Optika Atmosfery i Okeana Journal

Vol. 14, issue 09, article # 16

Protasevich A. E., Starikov V. I. The dependence of water vapor thermodynamic characteristics on H₂O molecule vibrational states. // Atmospheric and oceanic optics. 2001. V. 14. No. 09. P. 769-773. PDF
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Abstract:

The dependences of the second and third virial coefficients of water vapor on the H₂O molecule vibrational states are calculated. The model intermolecular Stockmayer potential is used taking into account the dipole-dipole interaction between excited molecules. The strong dependence of virial coefficients on molecular concentration is found. In this case a bending vibrational mode is excited. This also results in significant variations of thermodynamic parameters of water vapor, whose molecules are excited to the bending vibrational states.