Vibrational dependence of the broadening coefficients of H2O absorption lines perturbed by neon, krypton, and xenon pressure
V.I. Starikov1,2
1Tomsk State University of Control Systems and Radioelectronics, 634050, 40 Lenina Prospect, Tomsk, Russia
2National Research Tomsk Polytechnic University, 30, Lenin Avenue, Tomsk, 634050, Russia
Keywords: уширение линий, колебательная зависимость, водяной пар, неон, криптон, ксенон, line broadening, vibrational dependence, water vapor, neon, krypton, xenon
Subsection: SPECTROSCOPY OF AMBIENT MEDIUM
Abstract
The dependence of the intermolecular interaction potentials for the H2O-Ne, H2O-Kr, and H2O-Xe systems on the vibrational quantum numbers of H2O molecule is derived. The broadening coefficients γ are calculated for seven vibrational bands ν1, ν2, ν3, 2ν2, ν1 + ν2, ν2 + ν3, and ν1 + ν2 + ν3 of H2O molecule from the region 640-9888 cm-1. The analytical formula are suggested for the calculated broadening coefficients γ at T = 296 K. It is shown that the excitation of stretching modes of the vibrations in H2O molecule increases the broadening coefficients γ. The influence of the bending vibrations on γ is insignificant.
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