Double and Triple Ionization in Molecules Induced by Electron Impact
Double and Triple Ionization in Molecules Induced by Electron Impact
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DOI：
10.1063/1.1731972
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发表时间：
1961-08
影响因子：
4.4
通讯作者：
F. Dorman;J. D. Morrison
中科院分区：
文献类型：
--
作者：
F. Dorman;J. D. Morrison
研究了分子中电子碰撞的双电离和三电离，正如在单原子气体中发现的那样，数据支持双电离概率的阈值定律是过量电子能量的平方律函数的观点。一些激发态已被检测到，自电离似乎并不重要。测量了所观察到的所有多重电离过程的垂直电势。比较了单、双和三重电离的相对电子跃迁几率。本文讨论了影响多电荷分子离子稳定性的因素，并试图将电子碰撞数据与分子结构联系起来。结果表明，分离电荷之间的库仑排斥导致描述这些离子的势能函数是不寻常的形式。
Double and triple ionization by electron impact in molecules is examined and, as was found for the monatomic gases, the data support the view that the threshold law for the probability of double ionization is a square‐law function of the excess electron energy. Some excited states have been detected, and autoionization does not seem to be important. The vertical potentials for all the processes of multiple ionization observed have been measured. The relative electronic‐transition probabilities for single, double, and triple ionization are compared. The factors affecting the stability of multiply charged molecular ions are discussed, and an attempt is made to correlate the electron impact data with the molecular structures. It is shown that Coulomb repulsion between the separated charges causes the potential energy functions describing these ions to be of unusual form.