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

Research output: Contribution to journalArticle

Abstract

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
Volume192
Issue number1
Publication statusPublished - 1 Jan 1998

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Semiconductor lasers
Spectrometers
laser spectrometers
coefficients
profiles
diodes

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title = "Collisional-broadening coefficients in the ν6 band of 12CH3F perturbed by Ar",
abstract = "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,",
author = "M. Lep{\`e}re and G. Blanquet and J. Walrand and J.-P. Bouanich",
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journal = "Journal of molecular spectroscopy",
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Collisional-broadening coefficients in the ν6 band of 12CH3F perturbed by Ar. / Lepère, M.; Blanquet, G.; Walrand, J.; Bouanich, J.-P.

In: Journal of molecular spectroscopy, Vol. 192, No. 1, 01.01.1998, p. 231-234.

Research output: Contribution to journalArticle

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AU - Lepère, M.

AU - Blanquet, G.

AU - Walrand, J.

AU - Bouanich, J.-P.

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PY - 1998/1/1

Y1 - 1998/1/1

N2 - 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,

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