爆炸电子发射边界的粒子模拟实现
Realization of explosion electron emission boundary in a plasma simulation code
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摘要: 介绍了自行研制的全电磁柱坐标粒子模拟程序的电流分配方法和金属爆炸电子发射边界的模拟实现，该电流分配方法满足电荷电流连续性方程，避免了繁琐的泊松修正，适用于复杂边界物理问题的模拟研究。基于此电流分配方法的基础上，给出了建立在高斯定理基础上的简单且易于程序实现的阴极发射边界算法。利用该程序对平面二极管电子发射现象的模拟结果证明了算法的正确性。Abstract: Particleincell algorithms for computing current density and explosion electron emitting from cathode are briefly introduced. The current density algorithm which satisfies charge and current continuity equation, can avoid complex Poisson adjustment and can be used in simulation of physics problem with complex boundarys. Based on the algorithms of computing current density, a new model for explosion electron emission from conducting boundary surfaces is described. The new model is proved out by results of particle simulations of vacuum diode.
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