摘要
光致发光(OSL)剂量计是一种被动式累积个人剂量计,用于外照射个人剂量监测。与热释光剂量计(TLD)相比,它具有可重复测量、环境稳定性好、使用寿命长、信号衰退慢等优点。本文结合在个人剂量监测中应用OSL剂量计的工作经验,以OSL剂量计性能实验研究结果为基础,评价了OSL剂量计的最低可探测水平、角响应、能量响应、线性响应,并对OSL个人剂量测量系统的测量不确定度进行了评价。评价结果表明,在中国原子能科学研究院场区,OSL剂量计在1个月监测周期内的最低可探测水平(MDL)为0.04 mSv,角响应、能量响应、线性响应引起的偏差分别是1%、-14%、-4%。在95%的置信水平下,相对扩展不确定度为11.4%。
OSL dosimeter is a kind of passive intergrating personal dosimeter used in the monitoring of occupational external exposure dose. Though at present, OSL dosimeter is not used as widely as TLD dosimeter possibly due to the lack of a comprehensive study on OSL dosimeter＇ s performance and property, OSL dosimeter will get a wide application in our country in the future because of its advantages such as repeatable measurements, good environmental stability, long service life and slow signal decay. In this paper, OSL dosimeter＇s minimum detectable level, angle of incidence response, energy response, and linearity response have been reviewed from the experience of using OSL dosimeters in monitoring work. Based on the experimental results, the uncertainty in measurement has been analyzed. The results show that OSL dosimeter＇ s MDL in one month is 0.04 mSv. The errors caused by angle of incidence response, energy response, linearity response are 1% , - 14% , and - 4% , respectively. With a 95% confidence interval, relative expanded uncertainty is 11.4%.
作者
王丽姣
肖文慧
卢瑛
陆正
刘晓琳
黄艳
陈凌
WANG Lijiao;XIAO Wenhui;LU Ying;LU Zheng;LIU Xiaolin;HUANG Yan;CHEN Ling(China Institute of Atomic Energy,Beijing 102413)
出处
《辐射防护》
CAS
CSCD
北大核心
2018年第5期353-358,共6页
Radiation Protection
关键词
OSL
职业外照射
MDL
响应
不确定度
OSL
occupational external exposure dose
MDL
uncertainty relative expanded uncertainty
作者简介
王丽姣（1987-），女，2010年华北于南华大学核工程与核技术专业，2013年华业予中国原子能科学研究院辐射防护及环境保护专业，获硕士学位，工程师。E—mail：wanglijiao1008@qq．com
