Temperature dependence of self- and N2-broadening coefficients of CH3Br ν6 band

D. Jacquemart; H. Tran

doi:10.1016/j.jqsrt.2007.08.010

Temperature dependence of self- and N₂-broadening coefficients of CH₃Br ν₆ band

D. Jacquemart
, H. Tran

Sorbonne Université

Research output: Contribution to journal › Article › peer-review

Abstract

Using absorption FT spectra (Bruker IFS 120, unapodized FWHM resolution ≈0.001 cm^-1), about 1400 lines, between 880 and 1050 cm^-1, and belonging to the ν₆ band of both ¹²CH₃⁷⁹Br and ¹²CH₃⁸¹Br isotopologues have been studied. Self- and N₂-broadening coefficients are measured at various temperatures with an accuracy estimated to be around 10%. Their temperature-dependence exponents n_self and n_N2 have been derived with an accuracy estimated to be between 10% and 20%. A rotational dependence with the quantum number J has been observed for both n_self and n_N2, and has been empirically modeled using average values and polynomial expansions.

Original language	English
Pages (from-to)	569-579
Number of pages	11
Journal	Journal of Quantitative Spectroscopy and Radiative Transfer
Volume	109
Issue number	4
DOIs	https://doi.org/10.1016/j.jqsrt.2007.08.010
Publication status	Published - 1 Mar 2008

Keywords

Broadening coefficients
Fourier-transform spectroscopy
Infrared
Methyl bromide
Temperature dependence
Vibration-rotation

Access to Document

10.1016/j.jqsrt.2007.08.010

Cite this

@article{c60fbf1651e249c58925ea3587f40f7f,

title = "Temperature dependence of self- and N2-broadening coefficients of CH3Br ν6 band",

abstract = "Using absorption FT spectra (Bruker IFS 120, unapodized FWHM resolution ≈0.001 cm-1), about 1400 lines, between 880 and 1050 cm-1, and belonging to the ν6 band of both 12CH379Br and 12CH381Br isotopologues have been studied. Self- and N2-broadening coefficients are measured at various temperatures with an accuracy estimated to be around 10\%. Their temperature-dependence exponents nself and nN2 have been derived with an accuracy estimated to be between 10\% and 20\%. A rotational dependence with the quantum number J has been observed for both nself and nN2, and has been empirically modeled using average values and polynomial expansions.",

keywords = "Broadening coefficients, Fourier-transform spectroscopy, Infrared, Methyl bromide, Temperature dependence, Vibration-rotation",

author = "D. Jacquemart and H. Tran",

year = "2008",

month = mar,

day = "1",

doi = "10.1016/j.jqsrt.2007.08.010",

language = "English",

volume = "109",

pages = "569--579",

journal = "Journal of Quantitative Spectroscopy and Radiative Transfer",

issn = "0022-4073",

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TY - JOUR

T1 - Temperature dependence of self- and N2-broadening coefficients of CH3Br ν6 band

AU - Jacquemart, D.

AU - Tran, H.

PY - 2008/3/1

Y1 - 2008/3/1

N2 - Using absorption FT spectra (Bruker IFS 120, unapodized FWHM resolution ≈0.001 cm-1), about 1400 lines, between 880 and 1050 cm-1, and belonging to the ν6 band of both 12CH379Br and 12CH381Br isotopologues have been studied. Self- and N2-broadening coefficients are measured at various temperatures with an accuracy estimated to be around 10%. Their temperature-dependence exponents nself and nN2 have been derived with an accuracy estimated to be between 10% and 20%. A rotational dependence with the quantum number J has been observed for both nself and nN2, and has been empirically modeled using average values and polynomial expansions.

AB - Using absorption FT spectra (Bruker IFS 120, unapodized FWHM resolution ≈0.001 cm-1), about 1400 lines, between 880 and 1050 cm-1, and belonging to the ν6 band of both 12CH379Br and 12CH381Br isotopologues have been studied. Self- and N2-broadening coefficients are measured at various temperatures with an accuracy estimated to be around 10%. Their temperature-dependence exponents nself and nN2 have been derived with an accuracy estimated to be between 10% and 20%. A rotational dependence with the quantum number J has been observed for both nself and nN2, and has been empirically modeled using average values and polynomial expansions.

KW - Broadening coefficients

KW - Fourier-transform spectroscopy

KW - Infrared

KW - Methyl bromide

KW - Temperature dependence

KW - Vibration-rotation

U2 - 10.1016/j.jqsrt.2007.08.010

DO - 10.1016/j.jqsrt.2007.08.010

M3 - Article

AN - SCOPUS:36148975362

SN - 0022-4073

VL - 109

SP - 569

EP - 579

JO - Journal of Quantitative Spectroscopy and Radiative Transfer

JF - Journal of Quantitative Spectroscopy and Radiative Transfer

IS - 4