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
李文炎 1张贵英 1刘澜涛 1牛东升 1郭泽钦 1王志超 1拓华 1武鹤雁 1夏亭亭 1楚妮妮 1赖继川 1陈娇娇1
作者信息
- 1. 北京市化工职业病防治院放射部,北京 100093
- 折叠
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.
Abstract
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 Radi-ological 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 re-sponse,the calibration results of A were relatively high,while the calibration results of B were relatively low.In terms of en-ergy 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 re-sponse values of TLDs.
关键词
标准RQR辐射场/眼晶体/Hp(3)/热释光剂量计(TLD)Key words
Standard X-ray RQR field/Eye lens/Personal dose equivalent Hp(3)/Thermoluminescent dosimeter引用本文复制引用
出版年
2024
NETL
NSTL
万方数据