N2-broadening coefficients in the ν3 band of CS2 at room and low temperatures

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

Research output: Contribution to journalArticle


Using a tunable diode-laser spectrometer, N-broadening coefficients have been measured for 15 lines in the ν band of CS at room and low temperatures (298, 273.2, 248.2, 223.2, and 198.2 K). These lines with J values ranging from 2 to 62 are located in the spectral range 1519-1545 cm. The collisional widths are obtained by fitting each measured spectral line with a Voigt and a Rautian lineshape model and for a few lines we also used a Galatry model. From these results, we have determined the n parameter of the temperature dependence of each broadening coefficient. A semiclassical calculation of these broadenings has been performed by considering in addition to the main electrostatic quadrupole-quadrupole interaction an anisotropic dispersion contribution leading to satisfactory results at all temperatures and providing the n temperature dependence parameter in good agreement with the experimental determination.
Original languageEnglish
Pages (from-to)46-52
Number of pages7
JournalJournal of molecular spectroscopy
Issue number1
Publication statusPublished - 1 May 2006


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