管靶X射线辐射输运初步研究Ⅰ简化模型数值模拟与分析

PRELIMINARY INVESTIGATION ON X-RAY RADIATION TRANSPORT IN CYLINDRIEAL TARGETS Ⅰ SIMULATIONS AND ANALYSES ON THE SIMPLE MODEL

运用简化的X射线输运模型对管靶中的X射线输运进行初步的数值模拟与分析 .介绍X射线输运的简化模型 ,给出相关参量 ,推导出视角因子的积分表达式 ,对视角因子进行数值计算 ,讨论了简化输运模型方程的数值解法 .由数值计算结果得到辐射输运的定标公式 ,提出三种与辐射输运有关的自由程概念 。

We use a simple X ray radiation transport model to simulate and analyze X ray radiation transport in cylindrical targets. The simple transport model is introduced, and the relative parameters are given, then the viewing factors are derived and calculated. The numeric methods for the X\|ray transport equations based on the simple model are discussed. The scaling relations are obtained from the calculated results. Three kinds of free path relative to transport are advanced.