半导体型个人剂量计能量补偿的研究

Compensation research on energy response for the semiconductor personal dosimeter

目的：在X、γ射线能量参考条件下对3台新型半导体个人剂量计进行能量响应补偿,以满足国际电工委员会（IEC）技术规范及我国现行国家标准的相关要求。方法：在国家二级标准剂量学实验室,通过对无补偿剂量计能量响应实验获得的数据,采用一组不同厚度铅、锡复合过滤片,结合不同直径的开孔进行能量补偿,满足剂量计能量响应要求。结果：在50∽662 keV能量范围内,个人剂量计完成了测量误差≤±30%的能量补偿目标值。结论：通过采用打孔的铅、锡复合过滤片,可以对半导体型个人剂量计能量补偿,使之满足相关标准规范及实际使用的要求。

Objective： To complete experiments of the energy response compensation for three semiconductor personal dosimeters in order to meet the requirements of IEC and National Standard. Methods： In Beijing SSDL, the semiconductor detectors were covered by the different thicknesses of Pb and Sn additional filters with several diameter holes to compensate the dosimeters＇ energy response. Results： At the 50 keV-Cs-137 energy range, the measuring error of dosimeters is met within 30% of energy response. Conclusion： By the compensation of combined Pb and Sn filters with a hole, the semiconductor personal dosimeters can be used for radiation monitoring.