Electron Impact Ionization
Electron Impact Ionization
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DOI：
10.1109/tns.1976.4328379
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发表时间：
2013-05
影响因子：
1.8
通讯作者：
G. Dunn
中科院分区：
文献类型：
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作者：
G. Dunn
也许令人惊讶的是，一个最早在原子尺度上进行研究的过程之一，以及一个在70多年前首次受到关注的过程，仍然是各种密集研究努力的对象。这就是原子、分子和离子的电子碰撞电离的(看似)简单而熟悉的机制的情况。碰撞的多体性质不仅勉强让位于理论上的努力，而且有助于电离的过程的多样性和微妙也有助于确保进展只伴随着相称的工作：没有付出就没有收获。现代实验方法使得有效地测量和探索阈值定律、微分截面、部分截面、内壳层电离和不稳定物种(如自由基和离子)的电离成为可能。在大多数情况下，实验数据的可获得性为进一步的理论进步提供了动力和指导。
It is perhaps surprising that a process which was one of the first to be studied on an atomic scale, and a process which first received attention over seven decades ago, continues to be the object of diverse and intense research efforts. Such is the case with the (seemingly) conceptually simple and familiar mechanism of electron impact ionization of atoms, molecules, and ions. Not only has the multi-body nature of the collision given ground to theoretical effort only grudgingly, but also the variety and subtlety of processes contributing to ionization have helped insure that progress has come only with commensurate work: no pain - no gain. Modern experimental methods have made it possible to effectively measure and explore threshold laws, differential cross sections, partial cross sections, inner-shell ionization, and the ionization of unstable species such as radicals and ions. In most instances the availability of experimental data has provided impetus and guidance for further theoretical progress."