Diode-laser measurements of He- and N2-broadening coefficients and line-mixing effects in the Q-branch of the ν12 band of CO2

L. Ozanne, J.-P. Bouanich, R. Rodrigues, J.-M. Hartmann, G. Blanquet, J. Walrand

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    Résumé

    He- and N-broadening coefficients have been measured for the lines Q2 to Q22 of the V-V (1001 ← 0101) band of CO near 720.80cm, using a tunable diode-laser spectrometer. The collisional widths have been obtained at low perturber pressures by fitting Voigt and Galatry profiles to the measured shapes of the lines. Spectra in the V-V band of CO in mixture with He and N have also been recorded at higher pressures. The deviations observed from an additive superposition of Lorentzian lines have been notably reduced by considering collision-induced line-mixing effects.
    langue originaleAnglais
    Pages (de - à)337-344
    Nombre de pages8
    journalJournal of Quantitative Spectroscopy and Radiative Transfer
    Volume59
    Numéro de publication3-5
    Etat de la publicationPublié - 5 mars 1998

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