Rod-pinch 二极管理论及数值模拟

 介绍了Rod-pinch二极管的基本结构和工作原理，采用Laminar模型分析了Rod-pinch二极管中的粒子运动过程及其阻抗特性。考虑背景空间离子电荷的影响，用1维Laminar方程分析Rod-pinch二极管中电子的自箍缩过程，并且利用Magic程序对其中的粒子运动进行数值模拟，求解二极管中的电压和电流，最终得出二极管的阻抗特性，在较低电压下，负极性RPD的性能明显不如正极性RPD。根据临界电流经验公式，初步验证Laminar理论模型的可行性。

Theory and numerical simulation of a rod-pinch diode

This paper summarized the geometry and principle of the rod-pinch diode.Using Laminar model and considering the effect of background ion space charge on the one dimensional,Laminar equilibria of relativistic,magnetically self-insulated,electron flow is presented.Both positive and negative polarity diodes are simulated using MAGIC program,the current and voltage have also been solved through numerical simulation method.Results from numerical simulation are consistent with the calculations.In particular,it is shown that,as the voltage is the same,the self-pinch of negative rod-pinch diode is more difficult than that of the positive rod-pinch diode.Finally the characteristic impedance is detruded,the feasibility of laminar model has been validated.