共查询到17条相似文献,搜索用时 171 毫秒
1.
2.
3.
当入射氦原子能量为0.05eV时,计算了氦原子与氢分子碰撞的弹性散射和第一转动激发截面,用密耦方法计算了50个分波,得到的分波截面收敛得很好。 相似文献
4.
基于Hux1ey势函数的拟合势,通过精确度较高的密耦近似方法计算了入射能量为50 meV和150meV时,氦原子的四种同位素3He,4He,9He,10He与HCl分子碰撞体系的激发分波截面.通过分析不同能量下,各碰撞体系分波截面的差异,探讨了不同入射能量时He的同位素对He-HCl碰撞体系的分波截面的影响,总结出其分波截面随量子数和体系约化质量的变化规律. 相似文献
5.
6.
氢(氘、氚)的非对称同位素替代分子与低能氦原子(E=0 .1 eV) 碰撞分波截面研究和计算 总被引:4,自引:1,他引:3
当入射氦原子能量E=0.1 eV时,用密耦方程(Close Coupling Equat ion)研究和计算了氢的非对称同位素替代分子HD、TD、DT-He碰撞.首先考虑了非对称同位素替代时质心偏移量对势能函数的影响,得到在新质心坐标系中势能函数表达式,并计算了 E=0.1 eV时弹性碰撞00-00分波及非弹性碰撞激发00-01、00-02、00-03、00-04分波截面. 相似文献
7.
基于Huxley势函数的拟合势,通过精确度较高的密耦近似方法计算了入射能量为50meV和150meV时,氦原子的四种同位素3He,4He,9He,10He与HCl分子碰撞体系的激发分波截面.通过分析不同能量下,各碰撞体系分波截面的差异,探讨了不同入射能量时He的同位素对He-HCl碰撞体系的分波截面的影响,总结出其分波截面随量子数和体系约化质量的变化规律. 相似文献
8.
9.
利用新近发展的基于全相对论扭曲波方法研究电子-离子碰撞激发过程的计算程序,通过对Breit相互作用的考虑,计算了类氦等电子序列离子从亚稳态1s2s3S1激发2s电子到n=2,3壳层的电子碰撞激发截面;研究了不同入射电子能量时Breit相互作用对碰撞激发截面的影响,进一步总结了沿等电子序列变化时,Breit相互作用对截面影响的一般规律.部分计算结果与实验结果进行了比较,得到了很好的一致性.
关键词:
全相对论扭曲波方法
Breit相互作用
电子碰撞激发截面 相似文献
10.
11.
A new anisotropic potential is fitted to {\it ab initio} data. The close-coupling
approach is utilized to calculate state-to-state rotational excitation
partial wave cross sections for elastic and inelastic collisions of He atom
with HBr molecule based on the fitted potential. The calculation is
performed separately at the incident energies: 75, 100 and 200~meV.The
tendency of the elastic and inelastic rotational excitation partial wave
cross sections varying with total angular quantum number $J$ is obtained. 相似文献
12.
13.
This paper reports that an exact quantum close coupling calculation is carried out for rotational excitation in Ne HF collisions on the available anisotropic potential. Partial cross sections are obtained separately at the incident energies of 48.35, 75, 120 and 150meV. The reliability of the results is demonstrated by comparison with previously published theoretical findings. Based on the calculations, the effect of the potential energy surface on the excitation partial cross sections is discussed in detail. 相似文献
14.
15.
Partial Wave Cross Sections for Collisions between Helium Atoms and Hydrogen Halide Molecules 总被引:5,自引:0,他引:5
下载免费PDF全文
![点击此处可从《中国物理快报》网站下载免费的PDF全文](/ch/ext_images/free.gif)
The close-coupling method is utilized to calculate partial cross sections for elastic and inelastic scattering of He atoms with HX (X=F, Cl, Br) molecule based on the CCSD (T) potential energy surfaces obtained in the previous research. The calculation is performed at the incident energy of 200 me V. The rationality of our results has been confirmed by comparison with the available theoretical results. The tendency of the elastic and inelastic rotational excitation partial wave cross sections varying with the reduced mass of the three systems is obtained. 相似文献
16.
The impact of vibrational wave function on low energy electron vibrational scattering from nitrogen molecule
下载免费PDF全文
![点击此处可从《中国物理 B》网站下载免费的PDF全文](/ch/ext_images/free.gif)
The vibrational wave function of the target theoretically plays an important role in the calculation of vibrational excitation cross sections. By a careful study of the differential cross sections resulting from different vibrational wave functions we find that cross sections are susceptible to vibrational wave functions. Minor changes in the vibration wave function may cause a significant change in the cross section. Even more surprising is that by selecting a few numbers of potential models(which determine the vibrational wave functions) we can often calculate the differential scattering cross section in much closer agreement with experiment in the framework of body-frame vibrational close-coupling theory, which suggest that an accurate potential energy may play a more important role in scattering than we thought before. 相似文献
17.
Effects of a reagent's rotational and vibrational excitations on reactionO(3p)+ H2(v=0, 3, j = 0, 3, 5, 7, 9, 12, 15) → OH + H
下载免费PDF全文
![点击此处可从《中国物理 B》网站下载免费的PDF全文](/ch/ext_images/free.gif)
To investigate the effect of a reagent’s rotational and vibrational excitations on the stereo-dynamics of the reaction product, the title reaction is theoretically simulated using the quasi-classical trajectory (QCT) method on the 3 A and 3 A potential energy surfaces (PESs). The reaction cross section is considered as the only scalar property in this work at four different collision energies. Furthermore the vector properties including two polarization-dependent differential cross sections (PDDCSs), the angular distributions of product’ rotational momentum are discussed at one fixed collision energy. Effects of reagents’ rotational excitation on the reaction do exist regularly. 相似文献