Measurements and calculations of He-broadening and -shifting parameters of the water vapor transitions of the ν 1+ ν 2+ ν 3 band

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

    Research output: Contribution to journalArticle

    15 Citations (Scopus)

    Abstract

    The water vapor line broadening and shift in the ν 1+ ν 2+ ν 3 band induced by helium pressure were measured using a Bruker IFS 125HR FTIR spectrometer. The measurements were performed at room temperature at a spectral resolution of 0.01cm 1 and in a wide He pressure range. The shifting coefficients δ are mainly positive, in contrast to the line center shift induced by other mono-atomic gases. Calculations of the coefficients γ and δ were performed in the framework of the semi-classical method. The influence of the rotational dependence of the isotropic intermolecular potential and accidental resonances in the H 2O molecule on the shifting coefficients is discussed. Calculated values of line profile parameters are in a good agreement with observed parameters.

    Original languageEnglish
    Pages (from-to)1493-1503
    Number of pages11
    JournalMolecular Physics
    Volume110
    Issue number14
    DOIs
    Publication statusPublished - 20 Jul 2012

    Fingerprint

    Steam
    water vapor
    Pressure
    Helium
    Spectral resolution
    Fourier Transform Infrared Spectroscopy
    coefficients
    Spectrometers
    monatomic gases
    Gases
    shift
    spectral resolution
    Molecules
    Temperature
    helium
    spectrometers
    room temperature
    profiles
    molecules

    Keywords

    • line broadening and shifting coefficients
    • profile of spectral line
    • semi-classical method

    ASJC Scopus subject areas

    • Biophysics
    • Molecular Biology
    • Condensed Matter Physics
    • Physical and Theoretical Chemistry

    Cite this

    Measurements and calculations of He-broadening and -shifting parameters of the water vapor transitions of the ν 1+ ν 2+ ν 3 band. / Petrova, T. M.; Solodov, A. M.; Starikov, V. I.; Solodov, A. A.

    In: Molecular Physics, Vol. 110, No. 14, 20.07.2012, p. 1493-1503.

    Research output: Contribution to journalArticle

    Petrova, T. M. ; Solodov, A. M. ; Starikov, V. I. ; Solodov, A. A. / Measurements and calculations of He-broadening and -shifting parameters of the water vapor transitions of the ν 1+ ν 2+ ν 3 band. In: Molecular Physics. 2012 ; Vol. 110, No. 14. pp. 1493-1503.
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