辐射防护2026，Vol.46Issue(2)：126-133,8.
β-γ混合辐射场中定向剂量当量率Ḣ'(0.07)的监测方法研究
Measurement of directional dose equivalent rate Ḣ'(0.07)in β-γ mixed radiation field
冯梅 1韦应靖 2肖佐诗 3何兴旭 3崔伟 2唐智辉 2刘新昊2
作者信息
- 1. 中国辐射防护研究院,太原 030006||辐射安全与防护山西省重点实验室,太原 030006||中核集团辐射防护技术重点实验室,太原 030006
- 2. 中国辐射防护研究院,太原 030006
- 3. 海南核电有限公司,海口 570100
- 折叠
摘要
Abstract
To address the challenge of accurately determining the directional dose equivalent rate Ḣ'(0.07)in β-γ mixed radiation fields,a novel measurement methodology is proposed.This approach integrates measurements from ambient dose equivalent rate monitors,directional dose equivalent rate monitors,β spectrometers,and γ spectrometers.A β-γ mixed standard radiation field was established to verify this method.Following application of the methodology proposed in this study,the relative error between the measured Ḣ'(0.07,45°)value and the reference value traceable to a certified standard instrument was reduced from 13.0％to 2.69％,verifying the method's reliability.In field applications,Ḣ'(0.07)was measured and data were processed at 14 locations exposed to β-γ mixed radiation fields during the No.106 overhaul of Hainan nuclear power plant.The measured Ḣ'(0.07)/H ∗(10)ratios ranged from 2.06 to 29.1,with a mean value of 9.64—indicating that Ḣ'(0.07)was,on average,approximately one order of magnitude greater than Ḣ*(10).Accurate quantification of Ḣ'(0.07)in β-γ mixed fields is therefore essential for reliable assessment of occupational exposure risk and provides critical input for radiation protection decision-making in nuclear facilities.关键词
β-γ混合辐射场/定向剂量当量率 Ḣ'(0.07)/周围剂量当量率 Ḣ∗(10)/校准因子修正Key words
β-γ mixed radiation field/directional dose equivalent rate Ḣ'(0.07)/ambient dose equivalent rate Ḣ∗(10)/calibration factor correction分类
能源科技引用本文复制引用
冯梅,韦应靖,肖佐诗,何兴旭,崔伟,唐智辉,刘新昊..β-γ混合辐射场中定向剂量当量率Ḣ'(0.07)的监测方法研究[J].辐射防护,2026,46(2):126-133,8.
