用于H_(p)(10)测量的BeO光释光剂量测量系统的性能研究  

Performance Study of BeO Optically Simulated Luminescent Dosimetry System for H_(p)(10) Measurement

作　　者：张璇 李德红[1] 黄建微[1] 刘博 李东阳 ZHANG Xuan;LI Dehong;HUANG Jianwei;LIU Bo;LI Dongyang(National Institute of Metrology,Beijing 100029,China)

机构地区：[1]中国计量科学研究院,北京100029

出　　处：《计量科学与技术》2022年第5期15-18,60,共5页Metrology Science and Technology

基　　金：中央公益类科研机构基础研究经费(ANL1816)。

摘　　要：为掌握BeO光释光剂量测量系统的计量学性能指标,验证其是否满足个人剂量监测需求,将内含BeO光释光探测器的光释光剂量计置于标准X和γ射线参考辐射场中,对其进行辐照,针对个人剂量当量H_(p)(10),开展非线性响应、变异系数、能量响应、角响应与重复性等性能测试研究。在50μSv~1 Sv剂量范围内非线性响应为0.92~1.05,变异系数为0.55%~4.8%;在33 keV~1.25 MeV能量范围内能量响应为0.71~1.01;在0°~±75°入射角范围内,角响应为0.97~1.22;分别辐照剂量1 mSv、5 mSv和10 mSv并重复8次,相应的剂量重复性分别为0.99~1.00、0.99~1.00和0.97~1.00。结果表明BeO光释光剂量测量系统的性能指标均满足IEC 62387-2020标准要求,可开展个人剂量监测服务。To grasp the metrological performance indicators of the BeO optically stimulated luminescent(OSL) dosimetry system and verify whether it meets the needs of personal dose monitoring,the OSL dosemeter containing BeO optically stimulated luminescent detectors was placed in and irradiated with X-ray andγ-ray reference radiation fields.Performance test research on nonlinear response,coefficient of variation,energy response,angular response,and repeatability were carried out for the personal dose equivalent H_(p)(10).The nonlinear response ranged from 0.92 to 1.05 in the dose range of 50μSv to 1 Sv,and the coefficient of variation ranged from 0.55%to 4.8%.The energy response ranged from 0.71 to 1.01 in the energy range of 33 keV to 1.25 MeV.The angular response ranged from 0.97 to 1.22 in the range of0°to±75°angle of incidence.The irradiation dose of 1 mSv,5 mSv and 10 mSv were repeated 8 times,and the corresponding dose repeatability were 0.99-1.00,0.99-1.00 and 0.97-1.00,respectively.The results showed that the BeO OSL dosimetry system meets the requirements of the IEC 62387-2020 standard and can be used for personal dose monitoring.

关 键 词：BEO 光释光剂量测量系统 能量响应 剂量监测 

分 类 号：TB96[机械工程—光学工程]