Diode-laser measurements of O2-broadening coefficients in the ν3 band of CH3D

J.-P. Bouanich, K. Jacquiez, G. Blanquet, J. Walrand

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O-broadening coefficients have been measured for 29 lines of CHD in the P and R branches of the ν band, using a tunable diode-laser spectrometer. The collisional widths obtained by fitting Rautian profiles to the measured shapes of the lines are significantly larger than those derived from Voigt profiles. A comparison is made with results calculated from a semiclassical impact theory of collisional broadening. In addition to the weak electrostatic contributions of the intermolecular potential, we have considered a simple formalism for the other anisotropic interactions.
Original languageEnglish
Pages (from-to)386-389
Number of pages4
JournalJournal of molecular spectroscopy
Issue number2
Publication statusPublished - 1 Feb 1996


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