Rotational excitation of symmetric-top molecular ions by electron impact
Rotational excitation of symmetric-top molecular ions by electron impact
复制标题
电子碰撞对对称顶分子离子的旋转激发
DOI：
10.1103/physreva.12.396
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发表时间：
1975
影响因子：
2.9
通讯作者：
S. Chu
中科院分区：
文献类型：
--
作者：
S. Chu
在库仑-玻恩近似下，建立了电子碰撞对对称顶层分子离子的转动激发理论。推导了偶极相互作用和四极相互作用引起的转动跃迁的解析表达式。这些截面在阈值处很大且有限，并且随着电子碰撞能量的增加而减小。检验了本理论对低能碰撞的描述的有效性。报道了氢离子H，O+离子激发的数值计算。
The theory for the rotational excitation of symmetric-top molecular ions by electron impact is formulated within the Coulomb-Born approximation. Analytical expressions are derived for the rotational transitions induced by dipole and by quadrupole interactions. The cross sections are large and finite at threshold and decrease with increasing electron-impact energy. The validity of the present theory for the description of lowenergy collisions is examined. Numerical calculations are reported for the excitation of the hydronium H, O+ ion.