一种基于薄塑料闪烁体探测器的定向剂量当量率监测仪研制

辐射防护 ›› 2019, Vol. 39 ›› Issue (1): 7-12.

一种基于薄塑料闪烁体探测器的定向剂量当量率监测仪研制

韦应靖¹, 方登富¹, 孙训², 王勇¹, 陈立¹, 张庆利¹

1.中国辐射防护研究院,太原 030006;
2.上海市计量测试技术研究院,上海 201203

收稿日期:2018-04-09 出版日期:2019-01-20 发布日期:2019-11-08
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

Development of a directional dose equivalent rate monitorbased on thin plastic scintillation detector

WEI Yingjing¹, FANG Dengfu¹, SUN Xun², WANG Yong¹, CHEN Li¹, ZHANG Qingli¹

1.China Institute for Radiation Protection, Taiyuan 030006;
2.Shanghai Institute of Measurement and Testing Technology, Shanghai 201203

Received:2018-04-09 Online:2019-01-20 Published:2019-11-08

摘要/Abstract

摘要： 基于薄塑料闪烁体探测器,采用MC模拟优化了定向剂量当量率监测仪探头组合结构。研制的用于弱贯穿辐射监测的定向剂量当量率仪,在10 μSv/h～100 mSv/h范围内,相对固有误差＜± 6%;⁸⁵Kr的β辐射场中,-60°～60°范围内角度响应好于± 40%;β辐射平均能量在60 keV～800 keV内,能量响应变化在-24%～49%范围内;变异系数小于2%。实验测量结果表明,该定向剂量当量率仪辐射性能满足GB/T 4835.1—2012要求。

关键词: 塑料闪烁体, MC模拟, 相对固有误差, 角度响应, 能量响应

Abstract: Based on the thin plastic scintillation detector,MC simulation was used to optimize the probe combination structure of directional dose equivalent rate monitor. A directional dose equivalent rate instrument for monitoring weak penetration radiation was developed. In the range of 10 μSv/h to 100 mSv/h, the relative inherent error is less than ±6%. In the beta radiation field of ⁸⁵Kr, the angle response of -60° to 60° is better than that of ±40%. The average energy of beta radiation is in the range of 60 keV to 800 keV,and the energy response varies from -24% to 49%. The coefficient of variation is less than 2%. The experimental results show that the radiation performance of the directional dose equivalent rate instrument meets the requirements of GB/T 4835.1—2012.

Key words: plastic scintillator, Monte Carlo method, relative inherent error, angle dependence of response, energy dependence of response

中图分类号:

O571.1

韦应靖, 方登富, 孙训, 王勇, 陈立, 张庆利. 一种基于薄塑料闪烁体探测器的定向剂量当量率监测仪研制[J]. 辐射防护, 2019, 39(1): 7-12.

WEI Yingjing, FANG Dengfu, SUN Xun, WANG Yong, CHEN Li, ZHANG Qingli. Development of a directional dose equivalent rate monitorbased on thin plastic scintillation detector[J]. RADIATION PROTECTION, 2019, 39(1): 7-12.