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

被引：0
|
作者：
Mei, Cong [1 ,2 ]
Fu, Chen [3 ]
Zhang, Wei [4 ]
Li, Jiangkun [4 ]
Liang, Xudong [3 ]
Wu, Xue [4 ]
Luo, Qibin [1 ]
Yang, Yaxin [1 ]
机构：
[1] East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Peoples R China
[2] East China Univ Technol, Sch Nucl Sci & Engn, Nanchang 330013, Peoples R China
[3] East China Univ Technol, Sch Geophys & Measurement Control Technol, Nanchang 330013, Peoples R China
[4] Airborne Survey & Remote Sensing Ctr Nucl Ind, Shijiazhuang 050002, Peoples R China
来源：
NUCLEAR ENGINEERING AND TECHNOLOGY | 2025年 / 57卷 / 08期
关键词：
Airborne gamma-spectrometry; Monte-carlo simulation; Geant4; code; Sourceless efficiency calibration; SYSTEM;
D O I：
10.1016/j.net.2025.103594
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The calibration facility process for the airborne gamma-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 gamma-spectrum response curve of the airborne gamma-spectrometer above a cylindrical gamma-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 gamma-spectrometers and provides technical support for airborne gamma-spectrometry.
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页数：8
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