水体γ放射性测量中高纯锗探测效率刻度

曾国强; 朱珠; 葛良全; 罗明涛; 余鹏; 杨剑; 严磊; 赖茂林; 郭生良

doi:10.11889/j.0253-3219.2017.hjs.40.120402

您当前的位置：

首页 >

文章列表页 >

水体γ放射性测量中高纯锗探测效率刻度

核电子学与仪器 | 更新时间：2021-05-19

- 水体γ放射性测量中高纯锗探测效率刻度
- Efficiency calibration of HPGe detector used in water γ radioactivity measurement
- 核技术 2017年40卷第12期文章编号：120402
- 作者机构：
  
  1.成都理工大学四川省地学核技术重点实验室成都 610059
  2.成都新核泰科科技有限公司成都 610052
- 作者简介：
  
  [ "曾国强, 男, 1980年出生, 2008年于成都理工大学获博士学位, 从事核辐射探测与核电子学研究", "ZENG Guoqiang, male, born in 1980, graduated from Chengdu University of Technology with a doctoral degree in 2008, engaged in nuclear radiation detection and nuclear electronics research" ]
- 基金信息：
  
  国家重点研发计划项目(2017YFC0602100);国家自然科学基金(41474159);四川省科技支撑计划项目(2017GZ0390)
- DOI：10.11889/j.0253-3219.2017.hjs.40.120402
  中图分类号： TL8
- 收稿日期：2017-08-28，
  
  修回日期：2017-10-21，
  
  纸质出版日期：2017-12-10
- 稿件说明：
移动端阅览
曾国强, 朱珠, 葛良全, 等. 水体γ放射性测量中高纯锗探测效率刻度[J]. 核技术, 2017,40(12):120402

Guoqiang ZENG, Zhu ZHU, Liangquan GE, et al. Efficiency calibration of HPGe detector used in water γ radioactivity measurement[J]. Nuclear techniques, 2017, 40(12): 120402
曾国强, 朱珠, 葛良全, 等. 水体γ放射性测量中高纯锗探测效率刻度[J]. 核技术, 2017,40(12):120402 DOI： 10.11889/j.0253-3219.2017.hjs.40.120402.

Guoqiang ZENG, Zhu ZHU, Liangquan GE, et al. Efficiency calibration of HPGe detector used in water γ radioactivity measurement[J]. Nuclear techniques, 2017, 40(12): 120402 DOI： 10.11889/j.0253-3219.2017.hjs.40.120402.

摘要

水体放射性测量中要得到核素的活度，就必须知道核素的探测效率，而探测效率的影响因素较多，所以，对高纯锗探测装置进行效率刻度具有重要的实际意义。本文选用的高纯锗探测装置是基于一种水体放射性的实时在线监测系统，将待监测水域中的水样采样到低本底铅室中，利用高纯锗探测器对水中放射性核素进行探测。实验采用KCl配制了一定比活度的

K液体源，测量其γ能谱，并计算

K的探测效率。同时根据厂家给的具体参数，对整个水体监测系统进行了建模和计算，模拟计算了能量在59.5-2 614.7 keV范围内的γ射线的全能峰探测效率并得到效率曲线。通过对比

K的探测效率，发现其实验测量结果和模拟计算结果的偏差为0.018%。验证了使用蒙特卡罗模拟高纯锗探测装置效率刻度方法的可行性和准确性。

Abstract

Background

To obtain the activity of nuclide in the radioactive measurement of water

it is necessary to know the detection efficiency of nuclide which may be influenced by many factors.

Purpose

It is of great practical significance to carry out the efficiency scale of high purity germanium detection device. The high purity germanium detection device selected is based on a real-time on-line monitoring system for the radioactivity of water bodies.

Methods

The water samples in the monitored waters were sampled into the low-lead lead rooms

and the radionuclides in water were detected by high purity germanium detectors. The

K liquid source with a specific activity was prepared using KCl. The γ spectrum was measured and the detection efficiency of

K was calculated. At the same time

the whole water body monitoring system was modeled and calculated according to the specific parameters given by the manufacturers. The energy efficiency of the γ ray in the range of 59.5-2 614.7 keV was simulated and the efficiency curve was obtained.

Results

The deviation of detection efficiency of

K is found to be 0.018% between the simulation and experimental results.

Conclusion

The results verify the feasibility and accuracy of Monte Carlo method in simulating the efficiency scale of high purity germanium detection devices.

关键词

Keywords

references

朱文凯 , 陈军 , 熊建平 , . ISOCS系统无源效率刻度测量方法的准确性检验 . 核电子学与探测技术 , 2005 . 25 ( 3 ): 287 - 290 . http://www.cnki.com.cn/Article/CJFDTotal-HERE201404026.htm .

Wenkai ZHU , Jun CHEN , Jianping XIONG , . Accumulation test of the measurement method of passive efficiency of ISOCS system . Nuclear Electronics and Detection Technology , 2005 . 25 ( 3 ): 287 - 290 . http://www.cnki.com.cn/Article/CJFDTotal-HERE201404026.htm .

唐碧华. γ射线探测效率及响应函数的蒙特卡罗方法研究[D]. 成都: 四川大学, 2006. http://cdmd.cnki.com.cn/article/cdmd-10610-2006187959.htm

TANG Bihua. Study on Monte Carlo method for γ ray detection efficiency and response function[D]. Chengdu:Sichuan University, 2006.

罗奇 , 胡世鹏 , 孙慧斌 , . 高纯锗探测器的效率曲线和符合因子计算 . 核技术 , 2011 . 34 ( 12 ): 901 - 904 . http://kns.cnki.net/KCMS/detail/detail.aspx?filename=hjsu201112007&dbname=CJFD&dbcode=CJFQ .

Qi LUO , Shipeng HU , Huibin SUN , . Efficiency curve and coincidence factor calculation of high purity germanium detector . Nuclear Techniques , 2011 . 34 ( 12 ): 901 - 904 . http://kns.cnki.net/KCMS/detail/detail.aspx?filename=hjsu201112007&dbname=CJFD&dbcode=CJFQ .

张斌全 , 马吉增 , 程建平 , . 蒙特卡罗方法计算用于低能光子测量的高纯锗探测器的效率 . 核电子学与探测技术 , 2005 . 25 ( 3 ): 274 - 277 . http://kns.cnki.net/KCMS/detail/detail.aspx?filename=here200503013&dbname=CJFD&dbcode=CJFQ .

Binquan ZHANG , Jizeng MA , Jianping CHENG , . Monte Carlo method is used to calculate the efficiency of high purity germanium detectors for low energy photon measurements . Nuclear Electronics and Detection Technology , 2005 . 25 ( 3 ): 274 - 277 . http://kns.cnki.net/KCMS/detail/detail.aspx?filename=here200503013&dbname=CJFD&dbcode=CJFQ .

张小林 , 于功硕 , 李元景 , . HPGe探测器对圆形面源探测效率的研究 . 核技术 , 2014 . 37 ( 7 ): 070404 DOI: 10.11889/j.0253-3219.2014.hjs.37.070404 http://doi.org/10.11889/j.0253-3219.2014.hjs.37.070404 http://www.j.sinap.ac.cn/hejishu/CN/abstract/abstract230.shtml .

Xiaolin ZHANG , Gongshuo YU , Yuanjing LI , . Study on detection efficiency of circular surface source by HPGe detector . Nuclear Techniques , 2014 . 37 ( 7 ): 070404 DOI: 10.11889/j.0253-3219.2014.hjs.37.070404 http://doi.org/10.11889/j.0253-3219.2014.hjs.37.070404 http://www.j.sinap.ac.cn/hejishu/CN/abstract/abstract230.shtml .

杨会丽 , 陈杰 . ORTEC GEM70P4-95 P型高纯锗γ谱仪的标定 . 核技术 , 2012 . 35 ( 11 ): 854 - 858 . http://kns.cnki.net/KCMS/detail/detail.aspx?filename=hjsu201211012&dbname=CJFD&dbcode=CJFQ .

Huili YANG , Jie CHEN . Calibration of GEMECP1GE-4 P-type high-purity germanium spectrometer . Nuclear Techniques , 2012 . 35 ( 11 ): 854 - 858 . http://kns.cnki.net/KCMS/detail/detail.aspx?filename=hjsu201211012&dbname=CJFD&dbcode=CJFQ .

吴祥余. 不同尺寸γ射线探测器响应函数及探测效率的蒙特卡罗模拟[D]. 成都: 成都理工大学, 2009. http://cdmd.cnki.com.cn/article/cdmd-10616-2009220935.htm

WU Xiangyu. Monte Carlo simulation of response function and detection efficiency of γ ray detectors with different sizes[D]. Chengdu:Chengdu University of Technology, 2009.

D Karamanis , V Lacoste , S Andriamonje , . Experimental and simulated efficiency of a HPGe detector with point-like and extended sources . Nuclear Instruments and Methods in Physics Research , 2002 . A487 477 - 487 . https://www.sciencedirect.com/science/article/pii/S0168900202003935 .

A Saraiva , C Oliveira , M Reis , . Study of the response of an ORTEC GMX45 HPGe detector with a multiradio nuclide volume source using Monte Carlo simulations . Applied Radiation and Isotopes , 2016 . 113 47 - 52 . DOI: 10.1016/j.apradiso.2016.04.016 http://doi.org/10.1016/j.apradiso.2016.04.016 .

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

单能光子在HPGe探测器上的能量响应函数模拟

基于DDAA的SNM探测系统蒙特卡罗模拟优化设计

基于蒙特卡罗几何分裂减方差技巧的AB-BNCT治疗室屏蔽模拟分析

HPGe探测器效率模拟及符合相加校正技术研究

多电极高纯锗探测器信号读出模拟研究