Low and room temperature measurements and calculations of O2-broadening coefficients in the ν3 band of 12C32S2

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

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O-broadening coefficients have been measured for 16 lines in the P and R branches of the fundamental ν band of CS at room and low temperatures (298.0, 273.2, 248.2, 223.2, and 198.2 K), using a tunable diode laser spectrometer and a low temperature cell. These lines from P(62) and R(64) are located in the spectral range 1519-1547 cm. The collisional half-widths are obtained by fitting each observed profile with the Voigt and Rautian lineshape models. The broadening coefficients have also been calculated at all experimental temperatures using a semiclassical calculation performed by considering in addition to the electrostatic quadrupole-quadrupole interaction, a simple anisotropic contribution. Finally, from all the results, the parameter n of the temperature dependence of the broadening coefficients has been determined both experimentally and theoretically.
Original languageEnglish
Pages (from-to)61-66
Number of pages6
JournalJournal of molecular spectroscopy
Issue number1
Publication statusPublished - 1 Jan 2007

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