Methodology study on the sourceless efficiency calibration of airborne gamma-ray spectrometry

Hexi WU; Liangquan GE; Qianglin WEI; Bo YANG; Yaoyao LUO; Yibao LIU; Fei YU

doi:10.11889/j.0253-3219.2016.hjs.39.120202

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Methodology study on the sourceless efficiency calibration of airborne gamma-ray spectrometry

LOW ENERGY ACCELERATOR, RAY AND APPLICATIONS | 更新时间：2021-05-24

- Methodology study on the sourceless efficiency calibration of airborne gamma-ray spectrometry
- NUCLEAR TECHNIQUES Vol. 39, Issue 12, Article number: 120202(2016)
- 作者机构：
  
  1.东华理工大学核技术应用教育部工程研究中心南昌 330013
  2.东华理工大学核科学与工程学院南昌 330013
  3.成都理工大学成都 610059
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China;National Natural Science Foundation of China;National Natural Science Foundation of China;Open-ended Foundation from Engineering Research Center of Nuclear Technology Application, Ministry of Education
- DOI：10.11889/j.0253-3219.2016.hjs.39.120202
  CLC： TL817.2
- Received：31 August 2016，
  
  Revised：19 September 2016，
  
  Published：2016-12
- 稿件说明：
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Hexi WU, Liangquan GE, Qianglin WEI, et al. Methodology study on the sourceless efficiency calibration of airborne gamma-ray spectrometry[J]. Nuclear techniques, 2016, 39(12): 120202
DOI：

Hexi WU, Liangquan GE, Qianglin WEI, et al. Methodology study on the sourceless efficiency calibration of airborne gamma-ray spectrometry[J]. Nuclear techniques, 2016, 39(12): 120202 DOI： 10.11889/j.0253-3219.2016.hjs.39.120202.

摘要

因人工放射性核素的航空γ能谱仪实物刻度模型匮乏，导致难以依据航空γ能谱准确反演地面人工放射性核素的含量。本文基于窄束γ射线指数衰变规律与微积分的思想建立了任意形状的γ辐射源上空航空γ能谱仪无源效率刻度的数值计算模型。通过低空探测实验、高空变化趋势分析、5-100 m高空探测实验证明该模型适用于任意位置点源航空γ能谱仪全能峰探测效率数值计算。同时计算发现在低空探测时不同γ辐射的面源与体源的航空γ能谱仪全能峰探测效率与MCNP5模拟值的相对偏差在±1.5%以内，且含1 460.83 keV或2614.533 keV γ射线的无限大体源90-150 m探测高空计算结果与石家庄动态带上的实验值相对偏差为8.33%-15.82%。上述实验充分证实该无源效率刻度计算模型适用于航空γ能谱探测实践，为利用航空γ能谱仪寻找丢失放射源及核事故应急监测提供技术支持。

Abstract

Background:

It is still difficult to establish all calibration models for significant short-lived artificial radionuclides because of the short half-life periods of most artificial radionuclides

potential radiation hazards

high cost

etc. Therefore

how to obtain more accurate quantitative results from airborne gamma-ray spectrum needs to be solved urgently.

Purpose:

This study aims to find a calculation model for efficiency calibration of airborne gamma-ray spectrometry (AGS).

Methods:

Based on the basic thought in calculus

tiny source is divided from gamma radiation on arbitrary shape by a grid partition method and seen as a point source. And the full-energy peak efficiency formula of AGS for a point source is derived in this paper. According to the superposition principle

the sourceless efficiency calibration method of AGS is established.

Results:

Firstly

the calculation values show an agreement within ±5% error in comparison with measurement values while a point source of

137

Cs is only a short distance away. Secondly

the calculation response law of different positions by this paper coincides with the experiment of Grasty

et al

. Finally

the calculation values show an agreement within ±10% error in comparison with measurement values while a point source of

137

Cs and

Co is put under the AGS-863 for 5-100 m. These prove that the numerical calculation is suitable for computing the full-energy peak efficiency of a point source. Meanwhile

the calculation values of a surface source and a volume source show an agreement within ±1.5% error in comparison with simulation values by MCNP5. And while AGS is 90-150 m away from infinite volume source

the calculation values of 1 460.83 keV and 2 614.533 keV are 8.33%-15.82% bigger than the measurement values.

Conclusion:

These results verify that the sourceless efficiency calibration method of AGS is accurate and reliable. It gives technical support for monitoring radionuclide deposition after nuclear accidents and locating radioactive sources using AGS.

关键词

Keywords

references

王南萍 , 熊盛青 , 周锡华 , . 航空伽玛能谱仪对 137 Cs点源响应特征及全谱数据的提取技术 . 核技术 , 2005 . 28 ( 4 ): 313 - 318 . http://www.cnki.com.cn/Article/CJFDTotal-HJSU200504014.htm .

Nanping WANG , Shengqing XIONG , Xihua ZHOU , . Spectra characteristics of airborne spectrometer to 137 Cs sources and extraction of full abstraction peak . Nuclear Techniques , 2005 . 28 ( 4 ): 313 - 318 . http://www.cnki.com.cn/Article/CJFDTotal-HJSU200504014.htm .

邓磊 , 杨亚新 , 卢存恒 , . 一种确定放射性烟羽边界的新方法 . 核技术 , 2009 . 32 ( 12 ): 911 - 914 . http://www.cnki.com.cn/Article/CJFDTOTAL-HJSU200912008.htm .

Lei DENG , Yaxin YANG , Cunheng LU , . A new method for boundary determination of radioactive plume . Nuclear Techniques , 2009 . 32 ( 12 ): 911 - 914 . http://www.cnki.com.cn/Article/CJFDTOTAL-HJSU200912008.htm .

刘新华 , 张永兴 , 顾仁康 , . NaI (Tl)航测谱仪对 137 Cs、 60 Co点源角响应的地面刻度 . 辐射防护 , 1998 . 18 ( 3 ): 175 - 184 . http://www.cnki.com.cn/Article/CJFDTotal-FSFH803.002.htm .

Xinhua LIU , Yongxing ZHANG , Renkang GU , . Calibration of angel response of a NaI (Tl) airborne spectrometer to 137 Cs and 60 Co point sources on the ground . Radiation Protection , 1998 . 18 ( 3 ): 175 - 184 . http://www.cnki.com.cn/Article/CJFDTotal-FSFH803.002.htm .

D C W Sanderson , J J Mcleod , J M Ferguson . A European bibliography on airborne gamma-ray spectrometry . Journal of Environmental Radioactivity , 2001 . 53 411 - 422 . DOI: 10.1016/s0265-931X(00)00145-4 http://doi.org/10.1016/s0265-931X(00)00145-4 .

R L Grasty , K L Kosanket , R S Foote . Fields of view of airborne gamma-ray detectors . Geophysics , 1979 . 44 ( 8 ): 1447 - 1457 . DOI: 10.1190/1.1441017 http://doi.org/10.1190/1.1441017 .

卢存恒 , 刘庆成 , 韩长青 . 空间γ场的弹性变化及应用 , : 北京原子能出版社 , 2006 . 1 - 25 .

Cunheng LU , Qingcheng LIU , Zhangqing HAN . Elasticity change of spatial gamma field and application , : Beijing Atomic Energy Press , 2006 . 1 - 25 .

倪卫冲 , 顾仁康 . 核应急航空监测方法 . 铀矿地质 , 2003 . 19 ( 6 ): 366 - 373 . http://www.cnki.com.cn/Article/CJFDTOTAL-YKDZ200306008.htm .

Weichong NI , Renkang GU . Airborne monitor method of nuclear emergency response . Uranium Geology , 2003 . 19 ( 6 ): 366 - 373 . http://www.cnki.com.cn/Article/CJFDTOTAL-YKDZ200306008.htm .

胡明考, 张积运, 王新兴, 等.大型人工核素平面源校准装置的研建及应用[R].中国科学技术进展报告(第一卷), 2009

HU Mingkao, ZHANG Jiyun, WANG Xinxing, et al.Establishment and application of a large calibration device of artificial radionuclide plane source[R].Progress Report on China Nuclear Science & Technology (Vol.1), 2009

韩善彪 , 李锦 , 陆巍巍 , . 航空γ谱仪系统校准的基本内容和有关问题探讨 . 核安全 , 2013 . 12 ( 3 ): 48 - 52 . http://www.cnki.com.cn/Article/CJFDTOTAL-HAQY201303011.htm .

Shanbiao HAN , Jin LI , Weiwei LU , . Basic contents of calibration of airborne γ spectrometry system and discussion on some related issues . Nuclear Safety , 2013 . 12 ( 3 ): 48 - 52 . http://www.cnki.com.cn/Article/CJFDTOTAL-HAQY201303011.htm .

钱楠 , 王德忠 , 白云飞 , . HPGe探测器死层厚度及点源效率函数研究 . 核技术 , 2010 . 33 ( 1 ): 25 - 30 . http://www.cnki.com.cn/Article/CJFDTOTAL-HJSU201001006.htm .

Nan QIAN , Dezhong WANG , Yunfei BAI , . Dead layer thickness and efficiency function of point source for HPGe detector . Nuclear Techniques , 2010 . 33 ( 1 ): 25 - 30 . http://www.cnki.com.cn/Article/CJFDTOTAL-HJSU201001006.htm .

周程 , 王凤英 , 朱晓翔 . 无源效率刻度方法的实验验证和分析 . 核技术 , 2011 . 34 ( 8 ): 604 - 608 . http://www.cnki.com.cn/Article/CJFDTOTAL-HJSU201108011.htm .

Cheng ZHOU , Fengying WANG , Xiaoxiang ZHU . Sourceless efficiency calibration method and analysis of experiments . Nuclear Techniques , 2011 . 34 ( 8 ): 604 - 608 . http://www.cnki.com.cn/Article/CJFDTOTAL-HJSU201108011.htm .

L Gerward , N Guilbert , K B Jensen , . WinXCom-a program for calculating X-ray attenuation coefficients . Radiation Physics and Chemistry , 2004 . 71 ( 1 ): 653 - 654 . DOI: 10.1016/j.radphyschem.2004.04.040 http://doi.org/10.1016/j.radphyschem.2004.04.040 .

H X Wu , H Q Zhang , Q C Liu , . Information retrieval methods for high resolution γ-ray spectra . Nuclear Science and Techniques , 2012 . 23 ( 6 ): 332 - 336 .

Allyson J D.Environmental gamma-ray spectrometry:simulation of absolute calibration of in-situ and airborne spectrometers for natural and anthropogenic sources[D].Scotland:University of Glasgow, 1994

方晟 , 曾志 , 吴其反 , . 航空γ谱探测地层中放射性同位素的Monte Carlo模拟计算 . 清华大学学报(自然科学版) , 2007 . 47 ( S1 ): 1018 - 1021 . http://www.cnki.com.cn/Article/CJFDTOTAL-QHXB2007S1029.htm .

Sheng FANG , Zhi ZENG , Qifan WU , . Monte Carlo simulations of airborne gamma spectrometry of radionuclide in earth . Journal of Tsinghua University (Science and Technology) , 2007 . 47 ( S1 ): 1018 - 1021 . http://www.cnki.com.cn/Article/CJFDTOTAL-QHXB2007S1029.htm .

EJ/T 1032-2005:航空伽玛能谱测量规范[S].中华人民共和国核行业标准, 2005:1-25

EJ/T 1032-2005:Specification for airborne gamma-ray spectrometry[S].The People's Republic of China Nuclear Trade Standards, 2005:1-25

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