He-H_2碰撞(E=0.2,1.2,2.2 eV)分波截面的理论研究
A Theoretical Study of the Partial Wave Cross Section for He-H_2 Collisions at E=0.2,1.2 and 2.2 eV
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摘要: 使用原子与双原子分子相互作用比较准确的Tang-Toennies势模型,通过密耦近似(Close-Coupling)方法计算了He原子与H_2分子在不同碰撞能量(E=0.2,1.2,2.2 eV)时散射分波截面,首次对He-H_2体系较高碰撞能量(大于2.0 eV)时的碰撞截面进行了研究,对计算结果进行了讨论,总结了该碰撞体系的分波散射截面在弹性散射00-00和非弹性散射00-04的变化规律.Abstract: In this paper,the accurate atom-diatom Tang-Toennies potential and close-coupling equation are applied to the He-H_2 collision system when the incident energy is 0.2,1.2 or 2.2 eV.It is the first time that the partial cross sections of the He-H_2 collision system are calculated at a relatively high collision energy(>2-0 eV).By analyzing the calculated results,the changing tendencies of the elastic and inelastic partial wave cross sections of the system are obtained.
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