摘要
为深入研究系统电磁脉冲(SGEMP)特性,通过蒙特卡罗程序MCNP计算并总结了发射电子能谱、θ方向角分布以及光电产额等发射电子参数的变化规律,给出了不同X射线黑体温度下表征射线能量的能谱参数E_1。利用3维全电磁PIC程序对SGEMP进行模拟,并将模拟结果与用X射线黑体温度T近似代替能谱参数E_1取值方式下的模拟结果进行了对比。结果表明,低能射线的能谱参数与黑体温度近似相等;而高能射线的能谱参数与黑体温度存在偏差,会导致SGEMP模拟计算的电磁场峰值产生偏差。
To study the characteristics of system-generated electromagnetic pulse(SGEMP),the MCNP code is used to simulate and summarize the rule of electron spectrum,angular distribution and yield,as well as to provide the electron spectrum parameter E 1 of various blackbody temperatures.Then,the particle-in-cell(PIC)code is employed to simulate the electromagnetic fields of SGEMP with the electron parameter computed by the MCNP code,compared with the approximate method using blackbody temperature as the spectrum parameter.The result shows that the parameter E 1 can be replaced by T when the energy of radiation is low,and the differences between E 1 and T may cause deviations to the electromagnetic fields of SGEMP when the energy of radiation is high.
作者
陈剑楠
陶应龙
陈再高
王玥
CHEN Jian-nan;TAO Ying-long;CHEN Zai-gao;WANG Yue(Northwest Institute of Nuclear Technology,Xi’an710024,China;School of Electronics and Information Engineering,Xi’an Jiaotong University,Xi’an710049,China)
出处
《现代应用物理》
2018年第4期66-71,共6页
Modern Applied Physics
基金
强脉冲辐射环境模拟与效应国家重点实验室专项经费资助项目(SKLIPR1601Z)
关键词
系统电磁脉冲
电子能谱
MCNP
角分布
system-generated electromagnetic pulse
electron spectrum
MCNP
angular distribution
