摘要
研究复杂模型的系统电磁脉冲(SGEMP)特性,开发三维全电磁粒子模拟程序,用Monte Carlo方法计算电子发射的余弦角分布和指数能谱分布,作为校验,首先模拟光电子由圆柱端面向外发射的SGEMP模型,并与文献二维计算结果对比;用该程序对半径为10 cm,长度为20 cm的圆柱体只有一半侧面向外发射的三维SGEMP进行模拟,发现当发射电流为3.3A时,产生的电场最高可达56 k V·m^(-1),磁场高达3.0×10^(-6)T.
To study system-generated electromagnetic pulse（SGEMP） produced by complex model, a 3D particle in cell （PIC） code is exploited. A function module is appended to characterize cosine angular distribution and exponential energy spectra of photoelectron. For validation, external SGEMP effects induced by photoelectrons emitted from cylinder top surface is simulated and are compared with those by 2D code from literature. Subsequently, external SGEMP effects induced by photoelectrons emitted from half-side surface of a cylinder are studied. It shows that intense of electric field could get 56 kV·m^-1 and magnetic field is 3.0 ×10^-6 as emitting current is3.3 A.
作者
孙会芳
张芳
董志伟
SUN Huifang ZHANG Fang DONG Zhiwei(Institute of Applied Physics and Computational Mathematics, Beijing 100094, China)
出处
《计算物理》
CSCD
北大核心
2016年第4期434-440,共7页
Chinese Journal of Computational Physics
基金
中国工程物理研究院科学技术发展基金(2014B0403067)资助项目
关键词
全电磁粒子模拟程序
系统电磁脉冲
角分布
抗核加固
PIC code
system generated electromagnetic pulse
angular distribution
nuclear hardening
