Z箍缩内爆的MARED程序1维模拟分析  

Simulation of Z-pinch implosion using MARED code

作　　者：丁宁[1] 邬吉明[1] 杨震华[1] 符尚武[1] 宁成[1] 刘全[1] 束小建[1] 张扬[1] 戴自换[1] 

机构地区：[1]北京应用物理与计算数学研究所,北京100088

出　　处：《强激光与粒子束》2008年第2期212-218,共7页High Power Laser and Particle Beams

基　　金：国家自然科学基金资助课题(10575014;10635050;10775021);国防科技基础研究项目(A1520070074)

摘　　要：研制可靠的数值模拟工具对Z箍缩内爆产生X光辐射过程进行理论研究、实验分析以及负载设计至关重要。介绍了2维三温辐射磁流体力学程序(MARED)的物理方案,给出了MARED程序的1维检验结果,验证表明MARED程序适用不同装置条件、不同负载参数。结合丝阵Z箍缩实验的数值模拟和分析表明:相同负载质量条件下,钨丝阵内爆产生的X光辐射功率远大于铝丝阵产生的X光功率;相同负载电流条件下,负载质量越大,计算得到X光功率越低;X光功率随着负载电流增加而增加。The physical model of a two-dimensional three-temperature radiation magneto-hydrodynamics code, named MARED, is introduced. The coders 1 D simulation results are also presented, which include results for different currents and load parameters on facilities of Saturn and Qiangguang-Ⅰ. The plasma parameters＇ spatio-temporal distributions are obtained, and their self-consistent dynamic variations suggest that MARED code applies to simulations on different pulse power facilities and load conditions. By comparing results with different load materials, it is found that X-ray power of tungsten wire-array implosion is greater than that of aluminium wire-array for the same load mass. In addition, MARED simulations also show that the calculated X-ray power goes up with the load current, and goes down if the load mass is increasing.

关 键 词：Z箍缩 内爆等离子体 丝阵负载 MARED程序 数值模拟 X光辐射 

分 类 号：O532[理学—等离子体物理]