Determination of air dose rate of γ-rays by using G(E) function method

LAI Wanchang1 LIU Yanfang1 TANG Lili1 ZHANG Jiangyun2 1

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Determination of air dose rate of γ-rays by using G(E) function method

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- Determination of air dose rate of γ-rays by using G(E) function method
- NUCLEAR TECHNIQUES Vol. 34, Issue 9, (2011)
- 作者机构：
  
  1. 成都理工大学核技术与自动化工程学院
  2. 四川大学原子核科学技术研究所辐射物理及技术教育部重点实验室
- 作者简介：
- 基金信息：
  
  863计划重大项目(2006AA06A207)资助
- DOI：
  CLC： TL817.2
- Published：01 September 2011
- 稿件说明：
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[1]赖万昌,刘艳芳,唐丽丽,张江云.用G(E)函数法计算γ射线空气吸收剂量率[J].核技术,2011,34(09):679-682.

LAI Wanchang1 LIU Yanfang1 TANG Lili1 ZHANG Jiangyun2 1. Determination of air dose rate of γ-rays by using G(E) function method[J]. Nuclear techniques, 2011, 34(9): 679-682.
[1]赖万昌,刘艳芳,唐丽丽,张江云.用G(E)函数法计算γ射线空气吸收剂量率[J].核技术,2011,34(09):679-682. DOI：

LAI Wanchang1 LIU Yanfang1 TANG Lili1 ZHANG Jiangyun2 1. Determination of air dose rate of γ-rays by using G(E) function method[J]. Nuclear techniques, 2011, 34(9): 679-682. DOI：

摘要

基于Φ75 mm×75 mm NaI（Tl）多道能谱仪实验测量结果

采用全谱法测定空气吸收剂量率

从理论和实验入手建立能谱剂量转换函数G（E）。选取铀、钍、钾模型和铀、钍、钾混合模型

以及人工放射性核素60Co、137Cs获取标准能谱N（E）

用最小二乘法拟合得到G（E）函数的系数

并用G（E）函数法和贝克公式法估算剂量率结果与实测数据进行比对

前者的偏差小于后者。利用模型站和野外实地测量数据对该函数的准确性进行验证

误差均<10%。

Abstract

G(E) function is a software method by adjusting energy response of dosimetry instrument to obtain the dose rate.In this paper

we use U

60Co and 137Cs models

and U/Th/K mixed model

to obtain the standard spectrum

and then the G(E) function by least-square method.Comparisons of the dose rate results obtained by different methods

the G(E) function method is much better than the Baker formula method.Using the data from stand model and field measurements

analytical error of the G(E) function method is less than 10%.

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中国原子能科学研究院计量测试部

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