Self-broadening coefficients in the ν3 - ν1 band of CS2

F. Misago, M. Lepère, J.-P. Bouanich, G. Blanquet

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Résumé

The self-broadening coefficients of CS at room temperature have been measured for 34 lines in the P- and R-branches of the ν - ν band, using a diode-laser spectrometer. These lines with J values ranging from 2 to 78 are located in the spectral range 857-888 cm. The collisional widths are obtained by fitting each recorded line with the Voigt profile as well as the Rautian profile accounting for the collisional Dicke narrowing effect. The latter model provides larger broadening coefficients than the Voigt model. These coefficients are also calculated from a semiclassical formalism involving for the intermolecular potential the quadrupole-quadrupole interaction in addition to a simple anisotropic dispersion contribution. The theoretical results are in reasonable agreement with the experimental data in view of the estimated uncertainties in these data.
langue originaleAnglais
Pages (de - à)16-19
Nombre de pages4
journalJournal of molecular spectroscopy
Volume254
Numéro de publication1
Les DOIs
Etat de la publicationPublié - 1 mars 2009

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