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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >SOME IMPROVEMENTS CONCERNING THE MODELLING OF THE CATHODIC ZONE OF AN ELECTRIC ARC (ION INCIDENCE ON ELECTRON EMISSION AND THE COOLING EFFECT)
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SOME IMPROVEMENTS CONCERNING THE MODELLING OF THE CATHODIC ZONE OF AN ELECTRIC ARC (ION INCIDENCE ON ELECTRON EMISSION AND THE COOLING EFFECT)

机译:关于电弧弧阴极区建模的一些改进(离子对电子发射的影响和冷却效果)

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摘要

An accurate numerical calculation of the electron emission using the Numerov integration method of the Schrodinger eigenvalue equation is presented. Such a calculation eliminating the WKB approximation and the use of elliptic functions can give the corrections that have to be applied to the well-known Fowler-Nordheim [1] or Murphy and Good results [2]. Because the very intense electron emission that takes place in the cathode spot is greatly affected by those corrections, we give the results of the calculation of the Nottingham effect, which plays an important role in the energy balance equation at the cathode surface. Finally, an exploratory study is presented on the influence of ions within a distance of a few tens of angstrom units in front of the cathode surface on electron emission. [References: 8]
机译:提出了使用Schrodinger特征值方程的Numerov积分方法对电子发射进行精确的数值计算。这样的计算消除了WKB近似值并使用了椭圆函数,可以提供必须应用于著名的Fowler-Nordheim [1]或Murphy and Good结果[2]的校正。由于这些校正极大地影响了发生在阴极点的非常强烈的电子发射,因此我们给出了诺丁汉效应的计算结果,该结果在阴极表面的能量平衡方程中起着重要作用。最后,对阴极表面前面几十埃单位距离内的离子对电子发射的影响进行了探索性研究。 [参考:8]

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