摘要
本文报道了山西省环境天然贯穿辐射剂量水平调查的方法和结果。全省以25×25km网格均匀布点,共布设网格点262个,各类加密点255个,调查结果表明:(1)山西省原野γ辐射剂量率按测点、人口和面积的加权均值分别为5.39、5.43和5.41×10^(-8)Gy·h^(-1);(2)道路γ辐射剂量率按测点平均值为4.84×10^(-8)Gy·h^(-1);(3)室内γ辐射剂量率按测点和人口加权均值分别为8.09和8.24×10^(-8)Gy·h^(-1);(4)宇宙射线电离成份所致空气吸收剂量率,按测点和人口加权均值,室内分别为3.46和3.36×10^(-8)Gy·h^(-1),室外分别为3.85和3.73×10^(-8)Gy·h^(-1);(5)天然贯穿穿辐射(不包括中子成分)剂量率,按测点和人口加权均值,室内分别为11.55和11.60×10^(-8)Gy·h^(-1),室外分别为9.24和9.16×10^(-8)Gy·h^(-1);(6)天然γ辐射、宇宙射线和天然贯穿辐射所致山西人均年有效剂量当量分别为0.46、0.30和0.76mSv,所致集体年有效剂量当量分别为1.2、0.77和2.0×10~4人·Sv。
The methods and results of the investigation on naturalpenetrating radiation level in Shanxi Province are presented. 262 25×25km-netted measuring points were set unformly up all over the province,with 255 densely measuring points of different types added. The resultsshowed that: (1) The point-weighted, area-weighted and population-weighted average value of natural γ radiation dose rate over field was 5.39,5.41 and 5.43×10^(-8) Gy.h^(-1), respectively;(2) The point-weighted averagevalue of natural γradiation dose rate over road was 4.84×10^(-8) Gy.h^(-1);(3) The point-weighted and population-weighted average value of naturalγ radiation dose rate inside buildings was 8.09 and 8.24×10^(-8) Gy. h^(-1);(4)The point-welghted and population-weighted average value of the dose rateinside buildings from cosmic ray was 3.46 and 3.36×10^(-8) Gy. h^(-1), andoutside buildings was 3.85 and 3.73×10^(-8) Gy.h^(-1), respectively; (5) Thepoint-weighted and population-weighted average value of natural penetratingradiation dose rate inside buildings was 11.55 and 11.60×10^(-8) Gy.h^(-1) andoutside buildings was 8.97 and 8.42×10^(-8) Gy.h^(-1),respectively; (6) Theannual effective dose equivalent from natural γ radiation, cosmic ray andnatural penetrating radiation was 0.46, 0.30 and 0.76 mSv, respectively,and correspondingly, the annual collective effective dose equivalent was1.2, 0.77 and 2.0×10~4 man.Sv, respectively.
出处
《辐射防护》
CAS
CSCD
北大核心
1990年第6期449-459,共11页
Radiation Protection
关键词
环境
辐射
剂量率
调查
山西
Environment
Investigation
Natural Radiation
Natural Penetrating Radiation
Dose Rate
Shanxi
