带螺旋支撑杆同轴磁绝缘传输线的粒子模拟研究  

Particle-in-cell simulation studies on coaxial magnetically insulated transmission lines with screw strut

作　　者：王学琼[1] 刘大刚[1] 王小敏[1] 刘腊群[1] 杨超[1] 邹文康[2] 

机构地区：[1]电子科技大学物理电子学院,四川成都610054 [2]中国工程物理研究院流体研究所,四川绵阳621900

出　　处：《现代电子技术》2012年第2期87-90,共4页Modern Electronics Technique

基　　金：国家"973"计划资助项目(2007CB310401)

摘　　要：介绍了同轴磁绝缘传输线(MITL)的工作特性,对传输线极间电子分布、电子损失与磁绝缘的关系进行了阐述;分析了同轴磁绝缘传输线极间电子对传输线阻抗的影响,采用理论分析与粒子模拟相结合的方法,实现同轴MITL与负载轴对称平板二极管的阻抗匹配。运用MPI并行算法分别对带螺旋支撑杆的MITL进行数值模拟,并对模拟结果进行了分析,得出了所添加的螺旋金属支撑杆对同轴传输器件的影响。电压的最大损失率为2%,阳极电流的最大损失率达到了4.4%,阴极电流的损失率为8.9%,电磁场以及粒子实空间都有相应的变化。The operating characteristics of coaxial magnetically insulated transmission lines （MITL） are introduced. The relations of electron distribution and electron loss with magnetic insulation between the transmission line poles are described. The effect of the electron distribution between the poles of coaxial magnetically insulated transmission lines on the transmission line impedence is analyzed. The impedance matching between the coaxial MITL and the loading axisymmetric plate diode was achieved with the method of combining the theoretical analysis with particle simulation. The coaxial MITL with screw strut was numerically simulated by using MPI parallel algorithm. The simulation results are analyzed. The impact of the added metal screw strut on the coaxial MITL was found through the comparison of the simulated results. The maximum loss rates of voltage, anode current and cathode current are 2%, 4.4%and 8.9% respectively. The electromagnetic field and particle phasespace are all changed correspondingly.

关 键 词：螺旋支撑杆 Z箍缩 磁绝缘传输线 二极管 MPI并行算法 

分 类 号：O53[理学—等离子体物理]