Analytical representation of broadening coefficients of vibrational-rotational absorption lines of linear molecules

V. I. Starikov

    Research output: Contribution to journalArticle

    Abstract

    Analytical formulas are proposed for the coefficients that determine broadening of vibrational-rotational absorption lines of diatomic and linear molecules in the case when the broadening is caused by the pressure of buffer gases or linear molecules. The formulas are obtained by the parameterization of the semiclassical method relations with allowance for the predominant contribution related to polarization or dipole-quadrupole interaction. The parameters of the analytical formulas are determined for different vibrational bands of HCl and HF molecules in the case of argon, nitrogen, and air broadening, as well as for CO and CO2 molecules in the case of broadening by collisions with CO, CO2, N2, O2, and H2O.

    Original languageEnglish
    Pages (from-to)172-183
    Number of pages12
    JournalOptics and Spectroscopy (English translation of Optika i Spektroskopiya)
    Volume110
    Issue number2
    DOIs
    Publication statusPublished - Feb 2011

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    Molecules
    Carbon Monoxide
    coefficients
    molecules
    Argon
    allowances
    Parameterization
    diatomic molecules
    parameterization
    Buffers
    Nitrogen
    buffers
    quadrupoles
    Gases
    argon
    Polarization
    dipoles
    nitrogen
    collisions
    air

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics

    Cite this

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    abstract = "Analytical formulas are proposed for the coefficients that determine broadening of vibrational-rotational absorption lines of diatomic and linear molecules in the case when the broadening is caused by the pressure of buffer gases or linear molecules. The formulas are obtained by the parameterization of the semiclassical method relations with allowance for the predominant contribution related to polarization or dipole-quadrupole interaction. The parameters of the analytical formulas are determined for different vibrational bands of HCl and HF molecules in the case of argon, nitrogen, and air broadening, as well as for CO and CO2 molecules in the case of broadening by collisions with CO, CO2, N2, O2, and H2O.",
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    AB - Analytical formulas are proposed for the coefficients that determine broadening of vibrational-rotational absorption lines of diatomic and linear molecules in the case when the broadening is caused by the pressure of buffer gases or linear molecules. The formulas are obtained by the parameterization of the semiclassical method relations with allowance for the predominant contribution related to polarization or dipole-quadrupole interaction. The parameters of the analytical formulas are determined for different vibrational bands of HCl and HF molecules in the case of argon, nitrogen, and air broadening, as well as for CO and CO2 molecules in the case of broadening by collisions with CO, CO2, N2, O2, and H2O.

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