Vibrational Dependences of Broadening and Shift Coefficients of H2O Absorption Lines Perturbed by Ne, Kr, and Xe

V. I. Starikov

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    Abstract

    The dependence of the intermolecular interaction potentials on the vibrational quantum numbers of the H2O molecule is derived for the H2O–Ne, H2O–Kr, and H2O–Xe systems. The broadening γ and shift δ coefficients are calculated for seven vibrational bands ν1, ν2, ν3, 2ν2, ν1 + ν2, ν2 + ν3, and ν1 + ν2 + ν3 of the H2O molecule from the absorption region 640–9550 cm−1. An analytical formula is suggested for calculation of the broadening coefficients γ at T = 296 K. It is shown that the excitation of stretching modes of the vibrations in the H2O molecule increases the broadening coefficients. The influence of the bending vibrations on γ is insignificant.

    Original languageEnglish
    Pages (from-to)335-345
    Number of pages11
    JournalAtmospheric and Oceanic Optics
    Volume31
    Issue number4
    DOIs
    Publication statusPublished - 1 Jul 2018

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    Keywords

    • krypton
    • line broadening
    • neon
    • vibrational dependence
    • water vapor
    • xenon

    ASJC Scopus subject areas

    • Oceanography
    • Atomic and Molecular Physics, and Optics
    • Earth-Surface Processes
    • Atmospheric Science

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