两种眼晶体剂量计在同一辐射场刻度Hp(3)结果讨论  

Discussion of Hp(3)calibration with two thermoluminescent dosimeters in the same standard X-ray RQR radiation field

作　　者：李文炎 张贵英 刘澜涛 牛东升[1] 郭泽钦[1] 王志超[1] 拓华 武鹤雁 夏亭亭 楚妮妮 赖继川 陈娇娇 LI Wenyan;ZHANG Guiying;LIU Lantao;NIU Dongsheng;GUO Zeqin;WANG Zhichao;TUO Hua;WU Heyan;XIA Tingting;CHU Nini;LAI Jichuan;CHEN Jiaojiao(Radiochemistry Laboratory of Radiation Technology Department,Beijing Prevention and Treatment Hospital of Occupational Disease for Chemical Industry,Beijing 100093 China)

机构地区：[1]北京市化工职业病防治院放射部,北京100093

出　　处：《中国辐射卫生》2024年第3期318-322,共5页Chinese Journal of Radiological Health

摘　　要：目的通过使用国内外两种剂量计(简称A、B)在同一种辐射场(RQR标准X射线辐射场)刻度Hp(3),比较刻度结果,探究刻度Hp(3)的响应差异,为Hp(3)的刻度提供基础依据。方法选择柱模,使用A、B两种剂量计,在中国疾控中心辐射安全所二级标准剂量学实验室X射线RQR辐射场进行Hp(3)的刻度,选择射线包括RQR4(管电压为60 kV)、RQR7(管电压为90 kV)、RQR9(管电压为120 kV),刻度内容包括角度响应、能量响应和线性响应。结果在角度响应方面,A型剂量计对RQR标准X射线辐射场响应偏高,B型剂量计对RQR标准X射线辐射场响应偏低。在能量响应方面,A型剂量计响应偏高,B型剂量计响应偏低。在线性响应方面,2种剂量计拟合程度均较好。结论A、B两种剂量计可以在RQR标准X射线辐射场刻度Hp(3),在实际监测时,应注意角度和能量对TLD响应值的影响。Objective To compare Hp(3)calibration with a homemade(A)thermoluminescent dosimeter(TLD)and an imported(B)TLD in a standard X-ray RQR radiation field,to explore the different responses of A and B,and to provide foundation for the calibration of Hp(3).Methods A column mode was selected.Hp(3)calibration was performed using A and B in a standard X-ray RQR radiation field in the Secondary Standard Dosimetry Laboratory,National Institute for Radiological Protection,China Center for Disease Control and Prevention.Angle response,energy response,and linear response were calibrated with RQR4(60 kV),RQR7(90 kV),and RQR9(120 kV),respectively.Results In terms of angle response,the calibration results of A were relatively high,while the calibration results of B were relatively low.In terms of energy response,the calibration results showed a similar pattern to angle response.In terms of linear response,the calibration results of both A and B were satisfactory.Conclusion Both A and B can be used for normal calibration of Hp(3)in a standard X-ray RQR radiation field.However,in actual monitoring,attention should be paid to the energy and angle response values of TLDs.

关 键 词：标准RQR辐射场 眼晶体 Hp(3) 热释光剂量计(TLD) 

分 类 号：X591[环境科学与工程—环境工程]