HP(10)次级标准电离室几个重要性能测量及模拟计算

辐射防护 ›› 2018, Vol. 38 ›› Issue (6): 449-455.

• 剂量学基础 • 下一篇

H_P(10)次级标准电离室几个重要性能测量及模拟计算

韦应靖¹, 安世峰², 谢文明², 冯梅¹, 张庆利¹, 以恒冠¹

1.中国辐射防护研究院,太原 030006;
2.辽宁红沿河核电有限公司,辽宁大连 116319

收稿日期:2018-04-09 出版日期:2018-11-20 发布日期:2020-07-21
作者简介:韦应靖(1980—),男,2004年毕业于兰州大学核物理专业,2009年毕业于中国辐射防护研究院辐射防护及环境保护专业,获硕士学位,副研究员。E-mail:weiyj531@sina.com
基金资助:
国家自然科学基金资助项目(项目批准号:11605161)。

Measurement and simulation calculation for several important performances of H_P (10) secondary standard ionization chamber

WEI Yingjing¹, AN Shifeng², XIE Wenming², FENG Mei¹, ZHANG Qingli¹, YI Hengguan¹

1. China Institute for Radiation Protection, Taiyuan 030006;
2. Liaoning Hongyanhe Nuclear Power Co., Ltd., Liaoning Dalian 116319

Received:2018-04-09 Online:2018-11-20 Published:2020-07-21

摘要/Abstract

摘要： 介绍了T34035型H_p(10)次级标准电离室的结构和技术特性,实验测量了H_p(10)次级标准电离室的校准系数N_H和修正因子k(R,α),并评定给出校准系数N_H的相对扩展不确定度为4.6%(k=2),修正因子k(R,α)的相对扩展不确定度为6.0%(k=2)。在辐射质入射角≤75 °时,12～1 250 keV范围内能量响应好于±20%;个人剂量当量率非线性在100 μSv/h～3 Sv/h范围内好于±3%。采用 MCNP5模拟计算了该电离室对部分窄谱N系列和低空气比释动能L系列的k(R,α)值,结果表明计算值与实验测量值之间的相对误差在±6%范围内。说明该电离室性能满足次级标准电离室要求,可以直接用于H_p(10)量值的传递。

关键词: H_p(10)次级标准电离室, 校准系数N_H, 修正因子k(R,α)

Abstract: The structure and technical characteristics of T34035 H_p (10) secondary standard ionization chamber are introduced. The calibration coefficient NH and correction factor k(R, α) of H_p (10) secondary standard ionization chamber are measured. The uncertainty of the calibration coefficient N_H is 4.6% (k=2), and the uncertainty of the correction factor k(R, α) is 6% (k=2). When the radiation incident angle is less than 75 degrees, the energy response is better than ±20% in the range of 12 keV-1 250 keV, and the non-linearity of personal dose equivalent rate is better than ±3% in the range of 100 μSv/h-3 Sv/h. The k(R,α) values of some narrow spectrum N series and low air specific kinetic energy L series are simulated by MCNP5. The results show that the error between the calculated value and the measured value is within the range of ±6%. The ionization chamber meets the requirements of the secondary standard ionization chamber and can be used directly for the transmission of H_p (10) value.

Key words: H_p(10) secondary standard ionization chamber, calibration factor N_H, correction factor k(R,α)

中图分类号:

TL84

韦应靖, 安世峰, 谢文明, 冯梅, 张庆利, 以恒冠. H_P(10)次级标准电离室几个重要性能测量及模拟计算[J]. 辐射防护, 2018, 38(6): 449-455.

WEI Yingjing, AN Shifeng, XIE Wenming, FENG Mei, ZHANG Qingli, YI Hengguan. Measurement and simulation calculation for several important performances of H_P (10) secondary standard ionization chamber[J]. RADIATION PROTECTION, 2018, 38(6): 449-455.

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H_P(10)次级标准电离室几个重要性能测量及模拟计算

Measurement and simulation calculation for several important performances of H_P (10) secondary standard ionization chamber

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HP(10)次级标准电离室几个重要性能测量及模拟计算

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H_P(10)次级标准电离室几个重要性能测量及模拟计算

Measurement and simulation calculation for several important performances of H_P (10) secondary standard ionization chamber