A sourceless efficiency calibration model of airborne γ-spectrometry based on Geant4

IF 2.6 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Technology Pub Date : 2025-03-20 DOI:10.1016/j.net.2025.103594

Cong Mei , Chen Fu , Wei Zhang , Jiangkun Li , Xudong Liang , Xue Wu , Qibin Luo , Yaxin Yang

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引用次数: 0

Abstract

The calibration facility process for the airborne γ-spectrometer, which is built at the Shijiazhuang Dagou Village Airport of China, is time-consuming and labor-intensive. In this paper, a sourceless efficiency calibration model based on the Monte Carlo method using the Geant4 software has been established. The proposed model allows for the acquisition of the γ-spectrum response curve of the airborne γ-spectrometer above a cylindrical γ-radiation source containing uranium, thorium, and potassium elements in any proportion. It is applied to perform Compton scattering calibration and height attenuation correction for UGRS-10 airborne gamma spectrometer. The relative errors between the calibration parameters obtained by Geant4 simulation and those obtained by UGRS-10 airborne gamma spectrometer at Daguocun airport calibration facility are between 3 % and 27 %. The experiment demonstrates the Monte Carlo-based sourceless efficiency calibration model is suitable to calibrate airborne γ-spectrometers and provides technical support for airborne γ-spectrometry.

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基于Geant4的机载γ能谱无源效率定标模型

在中国石家庄大沟村机场建立的机载γ谱仪的校准设施过程耗时费力。本文利用Geant4软件建立了基于蒙特卡罗方法的无源效率标定模型。该模型允许机载γ谱仪在含有任意比例铀、钍和钾元素的圆柱形γ辐射源上方获取γ谱响应曲线。应用该方法对UGRS-10型机载伽马能谱仪进行康普顿散射定标和高度衰减校正。Geant4模拟得到的标定参数与大果村机场标定设施UGRS-10机载伽马能谱仪标定参数的相对误差在3% ~ 27%之间。实验验证了基于蒙特卡罗的无源效率标定模型适用于机载γ谱仪的标定，为机载γ谱仪的标定提供了技术支持。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Engineering and Technology 工程技术-核科学技术

CiteScore

4.80

自引率

7.40%

发文量

431

审稿时长

3.5 months

期刊介绍： Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development