期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 85, 期 1, 页码 74-78出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2011.09.016
关键词
Carbon dioxide; Near-infrared; Self-induced shifts; Temperature dependence; TDLAS
类别
资金
- CNRS
- CNES
By using a high resolution tunable diode laser absorption spectrometer combined with a cryogenically cooled optical multi-pass cell, we have measured the self-induced pressure shift coefficients for 8 transitions in the R branch of the (20(0)1)(III) <- (00(0)0)(I) band of carbon dioxide around 2.05 mu m. This spectral region is of particular interest for the monitoring of atmospheric CO2 with Differential Absorption Lidars (DiAL). The measurement of these shift coefficients was realized at five different temperatures ranging from 218 to 292 K in order to determine their temperature dependence. The results are thoroughly compared to previous values reported in the literature for the (20(0)1)(III) <- (00(0)0)(t) band of CO2. The temperature dependence of the self-induced pressure shifts are reported experimentally for the first time for this specific CO2 band. (C) 2011 Elsevier B.V. All rights reserved.
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