Collisional-broadening coefficients in the ν6 band of 12CH3F perturbed by Ar

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Ar-broadening coefficients are measured for 29 lines of CHF in the Q and Q 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, especially for the overlapping lines at low-J values, than those obtained from Voigt profiles. The broadening coefficients for the lines belonging to the same low-J transitions (J = 7-10) appear to be greater in the Q branch than in the RQ branch. Comparisons have been made with calculated results based on a semiclassical model including adjustable potential parameters,
Original languageEnglish
Pages (from-to)231-234
Number of pages4
JournalJournal of molecular spectroscopy
Issue number1
Publication statusPublished - 1 Jan 1998

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