N2-broadening coefficients of ethane

G. Blanquet, Jean Vander Auwera, M. Lepère

Research output: Contribution to journalArticle

Abstract

The N-broadening coefficients of ethane for 15 lines in the ν band at five pressures of nitrogen were measured. The measurements were carried out with a 1-m base White-type cell adjusted for four transits, yielding an optical path of 4.17 m. The average values of the N-broadening coefficients obtained at 296 K from the Voigt and Rautian line shapes are respectively equal to 0.0822 and 0.0864 cm atm. The results derived from the Voigt profile are 2 10% lower than those derived from the Rautian model. No rotational dependence is observed over the limited range of rotational quantum numbers investigated. The results also show that the adjustment of the Rautian profile provides an additional parameter, the collisional narrowing coefficient β.
Original languageEnglish
Pages (from-to)72-74
Number of pages3
JournalJournal of molecular spectroscopy
Volume255
Issue number1
DOIs
Publication statusPublished - 1 May 2009

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Ethane
ethane
Nitrogen
coefficients
transit
profiles
optical paths
quantum numbers
line shape
adjusting
nitrogen
cells

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Blanquet, G. ; Vander Auwera, Jean ; Lepère, M. / N2-broadening coefficients of ethane. In: Journal of molecular spectroscopy. 2009 ; Vol. 255, No. 1. pp. 72-74.
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N2-broadening coefficients of ethane. / Blanquet, G.; Vander Auwera, Jean; Lepère, M.

In: Journal of molecular spectroscopy, Vol. 255, No. 1, 01.05.2009, p. 72-74.

Research output: Contribution to journalArticle

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T1 - N2-broadening coefficients of ethane

AU - Blanquet, G.

AU - Vander Auwera, Jean

AU - Lepère, M.

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PY - 2009/5/1

Y1 - 2009/5/1

N2 - The N-broadening coefficients of ethane for 15 lines in the ν band at five pressures of nitrogen were measured. The measurements were carried out with a 1-m base White-type cell adjusted for four transits, yielding an optical path of 4.17 m. The average values of the N-broadening coefficients obtained at 296 K from the Voigt and Rautian line shapes are respectively equal to 0.0822 and 0.0864 cm atm. The results derived from the Voigt profile are 2 10% lower than those derived from the Rautian model. No rotational dependence is observed over the limited range of rotational quantum numbers investigated. The results also show that the adjustment of the Rautian profile provides an additional parameter, the collisional narrowing coefficient β.

AB - The N-broadening coefficients of ethane for 15 lines in the ν band at five pressures of nitrogen were measured. The measurements were carried out with a 1-m base White-type cell adjusted for four transits, yielding an optical path of 4.17 m. The average values of the N-broadening coefficients obtained at 296 K from the Voigt and Rautian line shapes are respectively equal to 0.0822 and 0.0864 cm atm. The results derived from the Voigt profile are 2 10% lower than those derived from the Rautian model. No rotational dependence is observed over the limited range of rotational quantum numbers investigated. The results also show that the adjustment of the Rautian profile provides an additional parameter, the collisional narrowing coefficient β.

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