Line-shape asymmetry of water vapor absorption lines in the 720-nm wavelength region

Details Line-shape asymmetry of water vapor absorption lines in the 720-nm wavelength region Line-shape asymmetry of water vapor absorption lines in the 720-nm wavelength region

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jqsrt..45..339g&link_type=abstract

Journal of Quantitative Spectroscopy and Radiative Transfer (ISSN 0022-4073), vol. 45, June 1991, p. 339-348.

Computer Science

14

Absorption Spectra, Line Shape, Line Spectra, Pressure Broadening, Visible Spectrum, Water Vapor, Argon, Frequency Shift, Oxygen, Spectrum Analysis, Voigt Effect, Xenon

Scientific paper

Spectral line-shape analyses were performed for water vapor lines broadened by argon, oxygen, and xenon in the 720-nm wavelength region. A line-shape asymmetry was observed, which is attributed to statistical dependence or correlation between velocity- and state-changing collisions. The generalized (asymmetric) Galatry profile, which results from the soft-collision profile and includes correlation between velocity- and state-changing collisions, was fitted to the observed line shapes and was found to compare favorably with the observed data. The most prominent asymmetries were observed with xenon as the buffer gas.

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