Semi-empirical Model of Collision-Induced Absorption Spectra of H2–H2 Complexes in the Second Overtone Band of Hydrogen at Temperatures from 50 to 500 K
Semi-empirical Model of Collision-Induced Absorption Spectra of H2–H2 Complexes in the Second Overtone Band of Hydrogen at Temperatures from 50 to 500 K
复制标题
50 至 500 K 温度下氢第二泛音带中 H2-H2 配合物碰撞诱导吸收光谱的半经验模型
DOI：
10.1006/icar.2000.6384
复制
发表时间：
2000
期刊：
影响因子：
3.2
通讯作者：
Yi Fu
中科院分区：
文献类型：
--
作者：
A. Borysow;J. Borysow;Yi Fu
本文用半经验数值方法计算了氢分子第二泛音带H2-H2络合物在5 0~5 0 0K温度范围内的碰撞诱导旋转振动吸收光谱(RVCIA)，第二泛音谱区约对应于∼0.86~0.77μm，常被称为(3-0)带.模型光谱紧密地再现了最近的两体实验CIA测量(Brodbeck等人。1999年)。本文所描述的数值方法使用简单的解析模型线型，可以简单地生成H2-H2的RV CIA谱。线形参数是基于与实验数据的拟合，但它们的温度依赖性是为了与量子力学理论相一致(Fu等人。1999年)。使用该方法的F-RTRAN程序可在http://www.astro.ku.dk/~aborysow/programs/.上获得该计划允许改变对位与邻位氢的比率，这一特征在行星大气研究中非常有用。这项工作对于模拟外行星的大气，特别是海王星和天王星的大气，在光谱的近红外区是有意义的。
Abstract We present a semi-empirical numerical method to compute the binary collision-induced rotovibrational absorption spectra (RV CIA) of H 2 –H 2 complexes in the second overtone band of hydrogen, at temperatures from 50 to 500 K. The spectral region of the second overtone corresponds approximately to ∼0.86–0.77 μm, and is often referred to as the (3–0) band. Model spectra closely reproduce recent two-body experimental CIA measurements (Brodbeck et al. 1999). The numerical procedure described in this paper uses simple analytical model lineshapes and can generate the RV CIA spectra of H 2 –H 2 with simplicity. The lineshape parameters are based on the fit to experimental data, but their temperature dependence is imposed to agree with quantum mechanical theory (Fu et al. 1999). The F ORTRAN program, utilizing the presented method, is available at http://www.astro.ku.dk/~aborysow/programs/. The program allows for a variation of the para -to- ortho hydrogen ratio, a feature that is very useful in planetary atmosphere studies. This work is of interest for modeling of the atmospheres of the outer planets, especially those of Neptune and Uranus, in the near-infrared region of the spectrum.