摘要
利用一维多群辐射输运程序 RDMG数值模拟神光 条件下辐射烧蚀铝箔的实验研究 ,详细描述了 X光在铝箔中的辐射输运过程 ,清楚地显示了辐射热波在铝箔中的传播 ;给出铝等离子体温度密度的时空分布、铝箔背面出射的 X光能谱及出射 X光各能区能流随时间的变化 ,分析出射 X光的能区对测量结果的影响 ,对神光 条件下辐射烧蚀铝箔的厚度范围进行初步的探讨。
We simulated radiation ablating Aluminum foil by using 1D muti group code(RDMG). With intense laser beams heating a gold hohlraum, the X ray with intensity of 0.71×10 14 W·cm -2 and pulse width 1.0ns emits from the hohlraum ablating 1.5μm and 3μm thick aluminum foil. The simulation investigates the radiation energy transport in hot dense medium Z matter (aluminum) and clearly shows the process of radiation heat wave passing through the aluminum foil. It has shown the sudden onset of X ray flux from rear side of aluminum foil observed by experiments. The burn through times predicted by the simulation fit well with the experimental results.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2001年第3期329-332,共4页
High Power Laser and Particle Beams
基金
国家自然科学基金资助课题!(19735 0 0 2 )
关键词
辐射烧蚀
辐射热波
铝箔
铝等离子体
黑腔
radiation ablating
radiation heating
aluminum foil
aluminum plasma
hohlraum
