激光惯性约束聚变装置靶室内电磁脉冲环境的理论研究  

Theoretical Research for Electromagnetic Pulse Environments in Laser Inertial Confinement Fusion Chambers

作　　者：孟萃[1,2] 徐志谦 金晗冰 姜云升 吴平 Meng Cui;Xu Zhiqian;Jin Hanbing;Jiang Yunsheng;Wu Ping(Department of Engineering Physics,Tsinghua University,Beijing 100084,China;Key Laboratory of Particle & Radiation Imaging ( Tsinghua University),Ministry of Education,Beijing 100084,China)

机构地区：[1]清华大学工程物理系,北京100084 [2]粒子技术与辐射成像教育部重点实验室,北京100084

出　　处：《光学学报》2019年第7期195-201,共7页Acta Optica Sinica

摘　　要：针对靶室内的强电磁脉冲(EMP)环境开展理论研究。按照物理机理的不同,将靶室内的EMP环境分为逃逸超热电子激励的EMP、腔体系统电磁脉冲(SGEMP)和线缆SGEMP三大类。分别建立物理模型和数学模型,采用时域有限差分、粒子模拟以及蒙特卡罗算法进行模拟研究,仿真与实验结果吻合较好,该结果为深入研究激光-靶物理过程的电磁现象,以及提高装置电磁兼容能力提供了技术支撑。We present theoretical research on the intensive electromagnetic pulse(EMP) inside a target chamber. Three types of EMP environment, including one irradiated by escaped hot electrons, one involving cavity-system-generated EMP(SGEMP), and one involving cable SGEMP, are considered based on different physical mechanisms. Further, we introduce the physical model and the numerical simulation method. The simulation is conducted based on the finite-difference time-domain method, the particle-in-cell method, and the Monte Carlo algorithm. The theoretical results are in good agreement with the experimental results. This study provides technical support for further studying on the electromagnetic phenomena in the laser-target processes and improving the electromagnetic compatibility of the devices.

关 键 词：激光光学 X射线光学 激光惯性约束聚变 超热电子 强电磁脉冲 系统电磁脉冲 

分 类 号：TN202[电子电信—物理电子学] O434.14[机械工程—光学工程]