辐射在CH泡沫中传输的数值模拟  

Numerical simulations for radiation transfer in CH foam

作　　者：赖东显[1] 冯庭桂[1] 蓝可[1] 许琰[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》2003年第4期355-358,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金资助课题(19735002);国家863计划项目资助课题;中国工程物理研究院基金资助课题

摘　　要：　利用一维多群辐射输运程序对辐射在CH泡沫中的传输过程进行了数值模拟,给出一些细致的物理图像和定量结果。在一定的入射辐射流条件下,密度变化对辐射传输特征、辐射加热介质的热力学平衡弛豫过程有重要影响。随着密度下降,辐射由亚声速传输转变为超声速传输,辐射在传输过程中的能谱形状也不同。One dimension multigroup radiation transfer code (RDMG) was used to simulate the process of radiation transfer in CH foam. The results show that in the same condition of incident flux, the CH density has an remarkable effect on the character of radiation transfer, the processes of thermodynamic equilibrium relaxation of radiation heating matter. When the density is going down, the supersonic heating wave will be substituted for the ablative heating wave in the matter. The character of radiation spectrum also varies with the density in the process of the transfer. In this paper, some detail physical pictures and quantitative results are given.Kwy words:Supersonic heating wave;Ablative heating wave;Process of relaxation

关 键 词：CH泡沫 辐射热波 数值模拟 传输过程 超声速加热波 烧蚀热波 弛豫过程 等离子体 ICF 

分 类 号：TL612.1[核科学技术—核技术及应用]