Self-broadening coefficients and line strengths in the v3 band of CH335C1 at low temperature

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Abstract

Self-broadened linewidths have been measured in the P- and R-branches of the v band of CHCl at 200 K using a tunable diode-laser spectrometer. The lines under study are located in the spectral range 706-751 cm, with J values ranging from 3 to 27 and K from 3 to 6. The collisional half-widths were estimated along with the corresponding line strengths by fitting measured shapes of the individual lines with Voigt profiles convolved with the instrumental function. The line strengths at 200 K are in satisfactory agreement with results derived from previous measurements. Even though semi-classical calculations of line-broadening involving electrostatic interactions have yielded half-widths at 200 and 296 K that are greater than experimental data for low or medium values of J, they seem to predict correctly the K-dependence of the broadening coefficients of lines with the same J transition as well as their temperature dependence.
Original languageEnglish
Pages (from-to)211-219
Number of pages9
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume53
Issue number2
Publication statusPublished - 1 Feb 1995

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Coulomb interactions
Linewidth
Semiconductor lasers
Spectrometers
laser spectrometers
coefficients
diodes
electrostatics
Temperature
temperature dependence
profiles
interactions

Cite this

@article{5403b4cee97849cf846e1fc31a08ad84,
title = "Self-broadening coefficients and line strengths in the v3 band of CH335C1 at low temperature",
abstract = "Self-broadened linewidths have been measured in the P- and R-branches of the v band of CHCl at 200 K using a tunable diode-laser spectrometer. The lines under study are located in the spectral range 706-751 cm, with J values ranging from 3 to 27 and K from 3 to 6. The collisional half-widths were estimated along with the corresponding line strengths by fitting measured shapes of the individual lines with Voigt profiles convolved with the instrumental function. The line strengths at 200 K are in satisfactory agreement with results derived from previous measurements. Even though semi-classical calculations of line-broadening involving electrostatic interactions have yielded half-widths at 200 and 296 K that are greater than experimental data for low or medium values of J, they seem to predict correctly the K-dependence of the broadening coefficients of lines with the same J transition as well as their temperature dependence.",
author = "G. Blanquet and J. Walrand and J.C. Populaire and J.-P. Bouanich",
note = "Copyright 2009 Elsevier B.V., All rights reserved.",
year = "1995",
month = "2",
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language = "English",
volume = "53",
pages = "211--219",
journal = "Journal of Quantitative Spectroscopy and Radiative Transfer",
issn = "0022-4073",
publisher = "Elsevier Limited",
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TY - JOUR

T1 - Self-broadening coefficients and line strengths in the v3 band of CH335C1 at low temperature

AU - Blanquet, G.

AU - Walrand, J.

AU - Populaire, J.C.

AU - Bouanich, J.-P.

N1 - Copyright 2009 Elsevier B.V., All rights reserved.

PY - 1995/2/1

Y1 - 1995/2/1

N2 - Self-broadened linewidths have been measured in the P- and R-branches of the v band of CHCl at 200 K using a tunable diode-laser spectrometer. The lines under study are located in the spectral range 706-751 cm, with J values ranging from 3 to 27 and K from 3 to 6. The collisional half-widths were estimated along with the corresponding line strengths by fitting measured shapes of the individual lines with Voigt profiles convolved with the instrumental function. The line strengths at 200 K are in satisfactory agreement with results derived from previous measurements. Even though semi-classical calculations of line-broadening involving electrostatic interactions have yielded half-widths at 200 and 296 K that are greater than experimental data for low or medium values of J, they seem to predict correctly the K-dependence of the broadening coefficients of lines with the same J transition as well as their temperature dependence.

AB - Self-broadened linewidths have been measured in the P- and R-branches of the v band of CHCl at 200 K using a tunable diode-laser spectrometer. The lines under study are located in the spectral range 706-751 cm, with J values ranging from 3 to 27 and K from 3 to 6. The collisional half-widths were estimated along with the corresponding line strengths by fitting measured shapes of the individual lines with Voigt profiles convolved with the instrumental function. The line strengths at 200 K are in satisfactory agreement with results derived from previous measurements. Even though semi-classical calculations of line-broadening involving electrostatic interactions have yielded half-widths at 200 and 296 K that are greater than experimental data for low or medium values of J, they seem to predict correctly the K-dependence of the broadening coefficients of lines with the same J transition as well as their temperature dependence.

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M3 - Article

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