Xe-broadening coefficients of 12CH3D: A test of theoretical line shapes

Christophe Lerot, Ghislain Blanquet, Jean Pierre Bouanich, Jacques Walrand, Muriel Lepère

    Résultats de recherche: Contribution à un journal/une revueArticleRevue par des pairs

    Résumé

    We present the Xe-broadening coefficients for six lines belonging to the ν3 band of 12CH3D measured at room temperature with a diode-laser spectrometer. The collisional widths are obtained from least-squares fitting of each absorption line with theoretical line shapes. We used the well-known Voigt profile, the soft and hard collision models considering the collisional narrowing and also line shapes taking into account the speed dependence of the collisional cross-section. The results derived by these different models are compared with each other and with theoretical broadening coefficients. The calculations are based on a semiclassical impact formalism that includes the atom-atom Lennard-Jones potential for CH 3D-Xe interactions in which CH3D is considered as a linear molecule.

    langue originaleAnglais
    Pages (de - à)1213-1220
    Nombre de pages8
    journalMolecular physics
    Volume103
    Numéro de publication9
    Les DOIs
    Etat de la publicationPublié - 10 mai 2005

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