Diode laser spectroscopy of two acetylene isotopologues (¹²C₂H₂, ¹³C¹²CH₂) in the 1.533 μm region for the PHOBOS-Grunt space mission

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• 作者：Jingsong Li ; Lilian Joly ; Julien Cousin ; Bertr ; Parvitte ; Bernard Bonno ; Virginie Zeninari ; Georges Durry
• 关键词：Diode laser ; Near-infrared spectrometer ; C₂H₂ isotopes ; Spectral lines parameters
• 刊名：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
• 出版年：2009
• 出版时间：December 2009
• 年：2009
• 卷：74
• 期：5
• 页码：1204-1208
• 全文大小：721 K

文摘

Several line intensities of the bands of ¹²C₂H₂ and ¹³C¹²CH₂ at 1.533 μm have been revised at room temperature. These molecular transitions were selected to measure acetylene within the framework of the Martian space mission PHOBOS-Grunt. In the spectral region ranging from 6518 to 6530 cm⁻¹, 10 lines of both isotopologues have been analyzed using a high resolution tunable diode laser spectrometer. These transitions are well appropriate to the monitoring of C₂H₂ by laser absorption spectroscopy with standard telecommunication laser diodes. Both the Voigt and the Rautian models are used to fit the molecular line shape and to provide accurate line strengths. Our data are thoroughly compared to existing database (including HITRAN08) and former experimental measurements.