Line strengths and self-broadening coefficients of carbon dioxide isotopologues (CO<sub>2</sub> and OCO) near 2.04 μm for the in situ laser sensing of the Martian atmosphere期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Line strengths and self-broadening coefficients of carbon dioxide isotopologues (CO₂ and OCO) near 2.04 μm for the in situ laser sensing of the Martian atmosphere

Authors:	T. Le Barbu,V. Zé ninari,B. Parvitte,G. Durry

Affiliation:	^a Groupe de Spectrométrie Moléculaire et Atmosphérique, UMR CNRS 6089, UFR Sciences Exactes et Naturelles, Moulin de la Housse, BP 1039, 51687 Reims, Cedex 2, France ^b Institut Pierre Simon Laplace (IPSL), Service d’Aéronomie, UMR 7620, CNRS-Réduit de Verrières, B.P. 3, 91371 Verrières-le-Buisson Cedex, France

Abstract:	A diode laser spectrometer was used in the laboratory to study ¹³CO₂ and ¹⁸O¹²C¹⁶O line intensities and self-broadening coefficients near 2.04 μm. The spectral region ranging from 4896 to 4903 cm⁻¹, which is suitable for in situ laser sensing of both isotopologues in the lower Martian atmosphere, was investigated using a distributed feedback GaInSb diode laser. Five lines of the (2 0⁰ 1)_II←(0 0 0) band of ¹³CO₂ and seven lines of the (2 0⁰ 1)_II←(0 0 0) band of ¹⁸O¹²C¹⁶O were carefully revisited. The measured intensities and self-broadening coefficients were thoroughly compared with relevant molecular databases.

Keywords:	07.57T 07.87
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