摘要
对在低能区有过高响应的γ辐射剂量计可采用带孔补偿过滤器进行能响补偿。本文介绍了对这类补偿过滤器选择最佳补偿参数(材料厚度和孔隙率)的近似求解方法;并对 CaSO:Tm 热释光剂量计用此方法作了实例计算。文中还计算了自制带有鼠笼结构的这类补偿过滤器的 CaSO:,Tm热释光剂量计对照射量的能量响应,与实测结果比较,各能量点响应的最大相差为10%。
A compensation filter with holes can be adopted to suppressthe excess response of a Gamma dosimeter over the low energy region.Aset of simultaneous equations has been set up to determine the optimuncompensation parameters(thickness and porosity)of the filter,and thesolving process of the equations has also been given.The exposure responseof CaSO_4:Tm TL dosimeters was calculated to illustrate the suggested method.The calculated results were compared with the measured responses of a CaSO_4:Tm TL dosimeter with a self-made squirrel cage filter,and the maximumdifference between them was found to be within 10%.
出处
《辐射防护》
CAS
CSCD
北大核心
1989年第1期27-32,共6页
Radiation Protection
关键词
补偿过滤器
r剂量计
能量响应
Energy Response
Compensation Filter
Optimun Compensation Condition
Porosity
