Re-vibrational Raman cross sections of water vapor in the OH stretching region
Re-vibrational Raman cross sections of water vapor in the OH stretching region
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DOI：
10.1006/jmsp.1999.7854
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发表时间：
1999-07-01
影响因子：
1.4
通讯作者：
Montero, S
中科院分区：
文献类型：
--
作者：
Avila, G;Fernández, JM;Montero, S
在26mbar和295k的气相条件下，用改进的高灵敏度光谱仪记录了水的拉曼光谱，从3400到4130 cm（-1）。用Flaud和Camy-Peyret的波函数和能级对该光谱进行了分析[J]。Mol. Spectrosc. 51,142(1974)]，以及相对于无量纲法坐标q(1)和q(3)的极化导数。结果表明，为了正确模拟观测光谱，必须考虑振动态nu(1)和nu(3)之间的非调和耦合。为了模拟水蒸气在很宽的温度范围内的拉曼光谱，从几开尔文的超音速膨胀到高温的燃烧过程，提供了含有再振动跃迁散射强度和能量的表格。(C) 1999学术出版社。
The Raman spectrum of H2O, in the gas phase at 26 mbar and 295 K, has been recorded from 3400 to 4130 cm(-1) using an improved spectrometer of very high sensitivity. This spectrum is analyzed in terms of the wavefunctions and energy levels of Flaud and Camy-Peyret [J. Mol. Spectrosc. 51, 142 (1974)], and of the polarizability derivatives with respect to the dimensionless normal coordinates q(1) and q(3). It is shown that the anharmonic coupling between the vibrational states nu(1) and nu(3) has to be considered for a correct simulation of the observed spectrum. Tables with scattering strengths and energies of re-vibrational transitions are provided in order to simulate the Raman spectrum of water vapor over a broad range of temperatures, from few Kelvin, under supersonic expansions, to high temperature, in combustion processes. (C) 1999 Academic Press.