N2-shift coefficients in the ν3 band of 12CH4 at room temperature

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Abstract

Using a dual beam diode-laser spectrometer, we have studied with accuracy the N2-shift coefficients in the P-branch of the υ3 band of methane. The experiments were performed at room temperature for 16 lines in the spectral range 2906-2948 cm-1 with J values between 7 and 11. Each line was recorded at four different nitrogen pressures ranging from 17 to 302 mbar. The collisional shifts were obtained by fitting to the experimental lineshape a Rautian-Sobel'Man profile that takes into account the Dicke narrowing. The shift coefficients were determined using a procedure where a non perturbed line of pure CH4 was simultaneously recorded with N2-shifted transitions. Finally, we give a comparison with previous published results.

Original languageEnglish
Pages (from-to)7-10
JournalJournal of molecular spectroscopy
Volume298
DOIs
Publication statusPublished - Apr 2014

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Methane
Semiconductor lasers
Spectrometers
Nitrogen
laser spectrometers
shift
room temperature
coefficients
methane
Experiments
diodes
nitrogen
Temperature
profiles

Keywords

  • Methane
  • Diode-laser spectroscopy
  • Line shifts

Cite this

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title = "N2-shift coefficients in the ν3 band of 12CH4 at room temperature",
abstract = "Using a dual beam diode-laser spectrometer, we have studied with accuracy the N2-shift coefficients in the P-branch of the υ3 band of methane. The experiments were performed at room temperature for 16 lines in the spectral range 2906-2948 cm-1 with J values between 7 and 11. Each line was recorded at four different nitrogen pressures ranging from 17 to 302 mbar. The collisional shifts were obtained by fitting to the experimental lineshape a Rautian-Sobel'Man profile that takes into account the Dicke narrowing. The shift coefficients were determined using a procedure where a non perturbed line of pure CH4 was simultaneously recorded with N2-shifted transitions. Finally, we give a comparison with previous published results.",
keywords = "Methane, Diode-laser spectroscopy, Line shifts, Methane, Diode-laser spectroscopy, Line shifts",
author = "Bastien Vispoel and Miguel Dhyne and Claude Populaire and Ghislain Blanquet and Muriel Lep{\`e}re",
year = "2014",
month = "4",
doi = "http://dx.doi.org/10.1016/j.jms.2013.12.004",
language = "English",
volume = "298",
pages = "7--10",
journal = "Journal of molecular spectroscopy",
issn = "0022-2852",
publisher = "Academic Press Inc.",

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TY - JOUR

T1 - N2-shift coefficients in the ν3 band of 12CH4 at room temperature

AU - Vispoel, Bastien

AU - Dhyne, Miguel

AU - Populaire, Claude

AU - Blanquet, Ghislain

AU - Lepère, Muriel

PY - 2014/4

Y1 - 2014/4

N2 - Using a dual beam diode-laser spectrometer, we have studied with accuracy the N2-shift coefficients in the P-branch of the υ3 band of methane. The experiments were performed at room temperature for 16 lines in the spectral range 2906-2948 cm-1 with J values between 7 and 11. Each line was recorded at four different nitrogen pressures ranging from 17 to 302 mbar. The collisional shifts were obtained by fitting to the experimental lineshape a Rautian-Sobel'Man profile that takes into account the Dicke narrowing. The shift coefficients were determined using a procedure where a non perturbed line of pure CH4 was simultaneously recorded with N2-shifted transitions. Finally, we give a comparison with previous published results.

AB - Using a dual beam diode-laser spectrometer, we have studied with accuracy the N2-shift coefficients in the P-branch of the υ3 band of methane. The experiments were performed at room temperature for 16 lines in the spectral range 2906-2948 cm-1 with J values between 7 and 11. Each line was recorded at four different nitrogen pressures ranging from 17 to 302 mbar. The collisional shifts were obtained by fitting to the experimental lineshape a Rautian-Sobel'Man profile that takes into account the Dicke narrowing. The shift coefficients were determined using a procedure where a non perturbed line of pure CH4 was simultaneously recorded with N2-shifted transitions. Finally, we give a comparison with previous published results.

KW - Methane

KW - Diode-laser spectroscopy

KW - Line shifts

KW - Methane

KW - Diode-laser spectroscopy

KW - Line shifts

U2 - http://dx.doi.org/10.1016/j.jms.2013.12.004

DO - http://dx.doi.org/10.1016/j.jms.2013.12.004

M3 - Article

VL - 298

SP - 7

EP - 10

JO - Journal of molecular spectroscopy

JF - Journal of molecular spectroscopy

SN - 0022-2852

ER -