摘要
本文报道了吉林省环境天然贯穿辐射水平调查的方法和结果。全省以２５ｋｍ×２５ｋｍ的网格均匀布点，共布设网格点３００个，另外布设各类加密点３２４个。调查结果表明：（１）吉林省原野γ辐射剂量率按面积、人口和网格点的加权均值分别为５４．５、５８．１和５５．７ｎＧｙ·ｈ￣（－１）；（２）道路γ辐射剂量率按网格点平均为５７．６ｎＧｙ·ｈ￣（－１）；（３）室内γ辐射剂量率按人口和网格点加权均值分别为９４．４和９２．９ｎＧｙ·ｈ￣（－１）；（４）宇宙射线电离成分（不包括中子成分）所致空气吸收剂量率按网格点和人口加权均值，室内分别为２９．２和２８．３ｎＧｙ·ｈ￣（－１），室外分别为３２．８和３２．３ｎＧｙ·ｈ￣（－１）；（５）天然贯穿辐射剂量率，按网格点和人口加权均值，室内分别为１２２．１和１２２．７ｎＧｙ·ｈ￣（－１），室外分别为８８．５和９０．４ｎＧｙ·ｈ￣（－１）；（６）天然γ辐射、宇宙射线和天然贯穿辐射所致居民人均年有效剂量当量分别为０．５１、０．２６和０．７７ｍＳｖ；所致集体年有效剂量当量分别为１．２、０．６和１．８×１０￣４人·Ｓｖ。
The methods and results of the investigation on natural penetrating radiation levelin Changchun Province are presented.300 25 km ×25 km-grid measuring points were set uni-formly up all over the province,with 324 densely measuring points of different types added. The results show that:(1)The area-weighted, population-weighted and point-weighted aver-age value of natural γ radiation dose rate for field is 54.5,58. 1 and 55。 7 nGy·h￣(-1),respective-ly;(2)The point-weighted average value of natural γ radiation dose rate for road is 57.6 nGy·h￣(-1);(3)The population-weighted and point-weighted average value of natural γ radiationdose rate inside buildings is 94.4 and 92.9 nGy·h￣(-1),respectively;(4)The point-weighted andpopulation-weighted average value of the dose rate inside buildings from cosmic ray is 29.2and 28. 3 nGy·h￣(-1),and outside buildings is 32.8 and 32.3 nGy·h￣(-1), respectively;(5)Thepoint-weighted and population-weighted average value of natural penetrating radiation doserate inside buildings is 122.1 and 122.7 nGy·h￣(-1), outside buildings is 88.5 and 90.4nGy·h￣(-1),respectively;(6)The annual effective dose equivalent from cosmic ray,natural γ ra-diation and natural penetrating radiation is 0.26,0.51 and 0.77 mSv,respectively;and corre-spondingly,the annual collective effective dose equivalent is 0.6,1.2 and 1.8×10￣4 man·Sv,respectively.
出处
《辐射防护》
CAS
CSCD
北大核心
1994年第5期370-376,共7页
Radiation Protection
关键词
天然贯穿辐射
Γ辐射
空气吸收剂量率
吉林
Natural Penetrating Radiation,Natural Gamma-Radiation,Dose Rate,Investigation,Jilin
