Measurement of the continuum absorption coefficient of water vapor near 14400 cm−1 (0.694 μm)
Measurement of the continuum absorption coefficient of water vapor near 14400 cm−1 (0.694 μm)
复制标题
14400 cm−1 (0.694 μm)附近水蒸气连续吸收系数的测量
DOI：
--
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
B. Tikhomirov
中科院分区：
文献类型：
--
作者：
A. B. Tikhomirov;I. Ptashnik;B. Tikhomirov
首次根据实验室测量数据确定了可见光区水汽的连续吸收系数。为此，借助于具有频率可调谐单脉冲红宝石激光器的高灵敏度光声光谱仪记录14395-14402 cm-1区域中的水蒸气吸收光谱，并将在该透明微窗中测量的吸收与基于HITRAN 2004数据库计算的吸收进行比较。在所研究的光谱区域中，当水蒸气-氮气混合物的总压为1000 mbar，温度为295 K时，kF =（0.53 ± 0.18）× 10−9 cm−1 mbar−1。CAC的这个值比连续体的IO-CKD模型中的CAC值大约高23%。
The continuum absorption coefficient (CAC) of water vapor (kcont) in the visible region is determined for the first time from the data of laboratory measurements. For this purpose, the absorption spectra of water vapor in the region 14395–14402 cm−1 are recorded with the aid of a high-sensitivity photoacoustic spectrometer with a frequency-tunable single-pulse ruby laser, and the absorption measured in this transparency microwindow is compared with that calculated based on the HITRAN 2004 data bank. In the spectral region under study, kcont = (0.53 ± 0.18) × 10−9 cm−1 mbar−1 at a total pressure of a water vapor-nitrogen mixture of 1000 mbar and a temperature of 295 K. This value of the CAC is roughly 23% higher than the CAC value in the IO-CKD model of the continuum.