Helium broadening parameters of water vapor in the 10,200–11,200 cm−1 spectral region

T. M. Petrova, A. M. Solodov, A. A. Solodov, V. M. Deichuli, V. I. Starikov

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    Abstract

    The He-broadening (γ) and shift (δ) coefficients of 76 rovibrational transitions belonging to the 3ν1, 3ν3, ν1 + 2ν2 + ν3, and 2ν1 + ν3 vibrational bands of H2O molecule were measured in the spectral range between 10,200 and 11,200 cm−1 with the spectral resolution of 0.01 cm−1 using a Bruker IFS 125HR FTIR spectrometer. The calculations of γ and δ were performed in the framework of the semi-classical method. It was shown that the vibrational dependence of the long-range as well as the short-range parts of an isotropic H2O-He interaction potential influence substantially the calculated broadening coefficients γ. The vibrationally and rotationally dependent analytical model for the broadening coefficients calculation is presented and discussed.

    Original languageEnglish
    Pages (from-to)60-65
    Number of pages6
    JournalJournal of Molecular Spectroscopy
    Volume331
    DOIs
    Publication statusPublished - 1 Jan 2017

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    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics
    • Spectroscopy
    • Physical and Theoretical Chemistry

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