环境γ辐射累积剂量率与高压电离室空气吸收剂量率的比对  

作　　者：田坤 王辉 夏冰 

机构地区：[1]山东省核与辐射安全监测中心

出　　处：《科技创新导报》2019年第22期92-93,95,共3页Science and Technology Innovation Herald

摘　　要：目的调查研究2018年济南市经十路自动站同时段γ辐射累积剂量率与高压电离室空气吸收剂量率平均值有无显著性差异;方法定期在辐射环境自动监测站高压电离室百叶箱中探测器有效中心的水平方向布放热释光剂量片,频次为1次/季,开展同时段γ辐射累积剂量率与高压电离室空气吸收剂量率平均值的比对;结果γ辐射累积剂量率范围为64.6~72.0 nGy/h,高压电离室空气吸收剂量率范围为66.5~67.0 nGy/h,|En|范围为0.11~0.41;结论γ辐射累积剂量率与高压电离室空气吸收剂量率监测结果均在济南市环境天然γ辐射辐射剂量率范围内;同时段自动站γ辐射累积剂量率与高压电离室空气吸收剂量率平均值的比对结果表示两者无显著性差异。[Objective]To i nvestigate whether there i s a signif icant difference between theγ-ray radiation cumulative dose rate and the average dose rate of air absorbed in the high pressure ionization chamber of Jinan Jingshi Road automatic monitoring station in the same period in 2018.[Methods]The thermoluminescent(TL)sheet is regularly arranged in the horizontal direction of the ef fective centre of the high pressure ionization chamber detector in the automatic monitoring station,with the frequency of one time per quarter,and the comparison between the cumulative dose rate ofγ-ray radiation and the average value of the air absorbed dose rate in the high pressure ionization chamber is carried out in the same period.[Results]The cumulative dose rate of theγ-ray radiation ranges from 64.6 to 72.0 nGy/h,the air absorbed dose rate of the high pressure ionization chamber ranges from 66.5 to 67.0 nGy/h,and the|En|ranges from 0.11 to 0.41.[Conclusions]The monitoring results ofγ–ray radiation absorbed cumulative dose rate and high pressure ionization chamber air absorbed dose rate are within the range of naturalγ–ray radiation dose rate of Jinan.And the comparison of the above shows that there is no signif icant difference between the two.

关 键 词：热释光 累积剂量 自动站 空气吸收剂量率 

分 类 号：X837[环境科学与工程—环境工程]