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简并部分解除情况下的二阶微扰修正 总被引:2,自引:0,他引:2
通过对一般情况下简并态的二阶微扰修正,澄清目前在简并微扰论中尚存的一些模糊认识。 相似文献
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采用同时测量Rayleigh散射和Mie散射混合信号的多普勒频移的单边缘技术,探测低空中(<12 km)的大气风速。由于大气后向散射比Rb值的变化,导致测量结果有很大的误差。详细分析了Rb值的变化对风速测量灵敏度及测量结果的影响,并做出了在不同Rb值情况下的风速测量校正曲线。结果表明:随着Rb值的增大,风速测量灵敏度有升高的趋势;随着Rb值偏差的增大,测量的风速误差有增大的趋势;同时,在相同的Rb值偏差情况下,随着径向风速的增大,测量的风速误差也有相应的增大。 相似文献
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Influence of rotational excitation and collision energy on the stereo dynamics of the reaction: N(4S)+H2 (v = 0, j = 0, 2, 5, 10) →NH(X3∑-)+H 下载免费PDF全文
The N+H2 reaction has attracted a great deal of attention from both the experimental and the theoretical community, and most of the attention has been paid to the first excited state N(2D) atoms in collisions with hydrogen molecules and the scalar properties of the reaction. In this paper, we study the stereo dynamical properties and calculate the reaction cross sections of the N(4S) + H2 (v=0, j=0, 2, 5, 10) → NH(X3Σ-) + H using the quasi-classical trajectory (QCT) method on an accurate NH2 potential energy surface (PES) reported by Poveda and Varandas [Poveda L A and Varandas A J C 2005 Phys. Chem. Chem. Phys. 7 2867], in a collision energy range of 25 kcal·mol-1-140 kcal·mol-1. Results indicate that the reactant rotational excitation and initial collision energy both have a considerable influence on the distributions of the k-j′ correlation, the k-k′-j′ correlation and k-k′ correlation. The differential cross section is found to be sensitive to collision energy. 相似文献
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