强激光与粒子束2011，Vol.23Issue(3)：693-696,4.DOI:10.3788/HPLPB20112303.0693
示踪材料在内爆X光诊断过程中的作用
Effects of tracer in fuel on X-ray diagnostics of implosion
摘要
Abstract
Diagnosing conditions of compressed fuel is a critical aspect of ICF capsule implosion experiments. A common diagnostic technique is to add a small concentration of high- or mid-Z dopant to the fuel, and measure the emission from the dopant either spectroscopically or by imaging. With radiative hydrodynamic simulations and post-processing of X-ray imaging for implosions, the designs of the fuel capsule are optimized, and the effects of tracer in fuel on X-ray diagnostics of implosion are analyzed.The results show that for the capsule of D2 fuel doped with argon at about l％ atomic fraction, although the implosion yield reduces by about 15％, the X-ray intensity of fuel increases by 50 times and the size of X-ray imaging is enlarged by about 30％,which is beneficial to the diagnosis of the fuel core. For the capsule with 0.05μm thick sulfur coated inside the CH shell, the dimensions of sulfur Ly-α monochromatic X-ray imaging accord with those of the fuel region, and thus the compressed boundary of fuel can be deduced. Above analysis results have been validated by Shenguang Ⅱ implosion experiments.关键词
激光聚变/内爆/示踪元素/燃料界面/X光诊断Key words
laser fusion/ implosion/ tracer/ fuel boundary/ X-ray diagnostics分类
数理科学引用本文复制引用
高耀明,李蒙,李永升,康洞国,李沄生..示踪材料在内爆X光诊断过程中的作用[J].强激光与粒子束,2011,23(3):693-696,4.基金项目
国家自然科学基金项目(10975025) （10975025）
计算物理实验室基金项目 （）
国家高技术发展计划项目 （）
