1.315μm附近CO2的高分辨率吸收光谱
Highresolution absorption spectra of CO2 near 1.315μm
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摘要: 利用可调谐激光长程吸收光谱测量系统，记录到1.315μm附近高气压（80kPa和40kPa）CO2的高分辨率吸收光谱，拟合分析获得谱线参数，结果与HITRAN 2k的数据基本一致。用程差法测量了绝对吸收，氧碘激光频率(7 603.138 5cm-1)的总吸收截面为(0.23~0.29)×-24cm2。仅计算谱线吸收的吸收截面为0.18×10-24cm2。在1.315μm波段COCO2存在连续吸收，吸收截面为(0.05~0.11)×10-24cm2。还讨论了测量误差问题。
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关键词:
- 吸收光谱的测量 /
- CO2的高分辨率吸收光谱 /
- 大气分子吸收光谱
Abstract: Using a laser longpath experimental system which White cell with CO2 of 80 or 40 kPa, the highresolution absorption spectra of CO2 near 1.315μm have been recorded and the spectroscopic line parameters are obtained. They are comparable with the data in HITRAN 2k. The absolute absorption is determined by means of path differencing. The total absorption cross section is (0.23~0.29)×10-24cm2 for CO2 at 7 603.138 5cm-1, and the absorption cross section comes of the spectroscopic lines is 0.18×10-24cm2. There is continuum absorption in this region and the continuum absorption cross section is (0.05~0.11) ×10-24cm2. The error is discussed as well. -
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