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Collisional-Broadening Coefficients in the ν6Band of12CH3F Perturbed by Ar

✍ Scribed by Muriel Lepère; Ghislain Blanquet; Jacques Walrand; Jean-Pierre Bouanich

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
139 KB
Volume
192
Category
Article
ISSN
0022-2852

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✦ Synopsis

Ar-broadening coefficients are measured for 29 lines of CH 3 F in the R Q 0 and R Q 6 branches of the 6 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 ϭ 7-10) appear to be greater in the R Q 0 branch than in the R Q 6 branch. Comparisons have been made with calculated results based on a semiclassical model including adjustable potential parameters.

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