散料γ射线测厚方法的研究

Study on a Measuring Method of Thickness of Matter in Bulk by γ Ray

散料γ射线厚度测量方法主要研究了宽束和窄束条件下，线减弱系数μ实与实验条件、散料厚度及散料含水量的变化规律，从中寻找计算散料厚度的方法，还研究了积累因子Ｂ与实验条件、散料厚度及含水量的关系。同时对实验测量的μ实与理论计算的μ理进行了比较。

he experimental values of γ ray linear absorption coefficient μexp under various experimental conditions are calculated. Various μexp values which vary with the thickness and moisture of matter in bulk under the conditions of wide and narrow γ ray beams are studied, and the measuring method of the thickness of matter in bulk is given. The μexp is compared with the μth which is obtained by theoretical calculation. In addition, the variation of the buildup factor B with the experimental conditions, such as the thickness and the moisture of matter in bulk, is studied.(