ICF内爆压缩X光成像过程数值模拟
Numerical simulation for X-ray imaging in ICF implosion
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摘要: 基于定态局域热动平衡辐射输运方程求解和光线追踪方法，编制了X光成像后处理程序，能够数值再现ICF内爆压缩X光成像过程。将该程序用于神光Ⅱ装置间接驱动内爆物理的理论设计和实验数据分析。模拟结果表明：燃料区压缩后的尺寸、燃料区掺Ar和内壳层涂S两元素特征谱线发光时序及发光持续时间等过程，后处理方法结果与诊断测量数据基本符合。Abstract: The post-processed technique is a basic method for analyzing X-ray imaging. With the solution of radiation transfer equation of local thermal equation in stationary state and ray tracing method, a post-processed program for X-ray imaging was accomplished. It could reproduce X-ray imaging in ICF implosion. Numerical results of size of compressed core and duration of doped argon and coated sulfur spectrum are coincident with the data of implosion experiments in Shenguang-Ⅱ．
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Key words:
- implosion compression /
- x-ray imaging /
- post-processed /
- ray tracing method
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