带辅助磁场等离子体断路开关的数值模拟  

Particle-in-cell simulations of plasma opening switch with external magnetic field

作　　者：陈玉兰[1] 曾正中[1] 孙凤举[1] 

机构地区：[1]西北核技术研究所,陕西西安710024

出　　处：《强激光与粒子束》2003年第6期595-598,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金重点资助课题(10035020)

摘　　要：　利用全电磁网格粒子方法模拟了外加磁场对等离子体断路开关(POS)断路性能的影响,给出了电压倍增系数与外加磁场的关系曲线。数值模拟表明,外加轴向磁场线圈必须放在同轴型POS阴极的同侧才能显著改善开关的断路性能;当外加角向磁场时,内电极为阴、阳极的同轴型POS的断路性能都得到了不同程度的改善。随着外加磁场的增大,电压倍增系数将达到饱和。Fully electromagnetic particleincell simulations are performed to study the effects of an external magnetic field on coaxial plasma opening switch (POS). The simulation results show that POS opening performance can be significantly improved only when external longitudinal magnetic field coils are placed at the cathode side, and an additional azimuthal magnetic field is effective whether the central electrode is of positive or negative polarity. Voltage multiplication coefficient K rises with the additional magnetic field increasing till the electron current is completely magnetically insulated during the opening of POS.

关 键 词：等离子体断路开关 数值模拟 POS 断路性能 电压倍增系数 外加磁场 辅助磁场 脉冲功率电感储能装置 全电磁网格粒子模拟 

分 类 号：TL503[核科学技术—核技术及应用] TM56[电气工程—电器]