圆柱形钨/玻璃复合元件线吸收系数的计算及测量

Measurement of Line Absorption Coefficient of Cylindrical Tungsten/Glass Complex Optical Component

提出了一种新型的调控高能X射线的光学器件—圆柱形钨/玻璃复合光学元件,该光学元件是用金属钨在圆柱形玻璃体表面镀膜。用Matlab语言编写程序,对金属Cu以及钨/玻璃复合光学元件的线吸收系数进行了理论计算。金属Cu线吸收系数的计算结果与常用数据吻合较好,吸收限位置的线吸收系数的突变证明该程序的高精度。钨/玻璃复合光学元件线吸收系数的计算结果与实验测量数据具有较好的一致性,同时证明钨/玻璃复合光学元件对低能X射线的滤波作用。

A cylindrical tungsten/glass complex optical component is proposed for the transmission of high energy X-ray. The cylindrical tungsten/glass complex optical component uses tungsten film to reflect and focus high energy X-ray. Using a Matlab program, the line absorption coefficients of metal Cu and the tungsten/glass complex optical component are calculated. Theoretical calculation results of metal Cu agree with common databases and the saltation of the line absorption coefficient at the absorption edge proves the high-precision of this program. Calculation results of the optical componentare consistent with experimental results, which prove the optics can filter low-energy X-ray.