Diode-Laser Measurements of Ar-Broadening Coefficients in the ν2 Band of HCN

J.P. Bouanich, G. Blanquet, J. Walrand

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Ar-broadening coefficients have been measured for 29 lines of HCN in the P, Q, and R branches of the ν band, using a tunable diode-laser spectrometer. These lines with J values ranging from 1 to 25 are located in the spectral range 640-790 cm. The collisional widths obtained by fitting Rautian profiles to the measured shape of the lines are significantly larger than those derived from Voigt profiles. Semiclassical calculations of these collisional broadenings have been performed using the atom-atom intermolecular potential. The calculated results in the P, Q, and R branches are in satisfactory agreement with the experimental data.
    Original languageEnglish
    Pages (from-to)532-539
    Number of pages8
    JournalJournal of molecular spectroscopy
    Volume173
    Issue number2
    DOIs
    Publication statusPublished - 1 Oct 1995

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