Groupe de Spectrométrie Moléculaire et Atmosphérique, UMR CNRS 6089, Université de Reims Champagne-Ardenne, UFR Sciences Exactes et Naturelles, Moulin de la Housse, BP 1039, 51687 Reims Cedex 2, France.
Spectrochim Acta A Mol Biomol Spectrosc. 2012 Jan;85(1):74-8. doi: 10.1016/j.saa.2011.09.016. Epub 2011 Sep 29.
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 2.05μm. This spectral region is of particular interest for the monitoring of atmospheric CO(2) with Differential Absorption Lidars (DiAL). The measurement of these shift coefficients was realized at five different temperatures ranging from 218 to 292K 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)(I) band of CO(2). The temperature dependence of the self-induced pressure shifts are reported experimentally for the first time for this specific CO(2) band.
利用高分辨率可调谐二极管激光吸收光谱仪结合低温光学多通池，我们测量了二氧化碳（20(0)1）（III）←（00(0)0）（I）带 R 支的 8 条跃迁在 2.05μm 附近的自感应压力位移系数。该光谱区域对于利用差分吸收激光雷达（DiAL）监测大气 CO(2)特别感兴趣。在 218 至 292K 的五个不同温度下进行了这些位移系数的测量，以确定它们的温度依赖性。将结果与文献中先前报道的二氧化碳（20(0)1）（III）←（00(0)0）（I）带的结果进行了彻底比较。首次在实验上报道了该特定 CO(2)带的自感应压力位移的温度依赖性。
