Calibration HPGe detector using IAEA-U source for CBRNe

被引：1

作者：

Nascimento, Debora Siqueira ^{[1
,2
]}

Chierici, Andrea ^{[2
]}

Ciolini, Riccardo ^{[2
]}

Chiappini, Stefano ^{[1
]}

d'Errico, Francesco ^{[2
]}

Chiappini, Massimo ^{[1
]}

机构：

[1] Natl Inst Geophys & Volcanol, Via Vigna Murata 605, I-00143 Rome, Italy

[2] Univ Pisa, Dept Civil & Ind Engn, Lgo Lucio Lazzarino, I-56122 Pisa, PI, Italy

来源：

EUROPEAN PHYSICAL JOURNAL PLUS | 2024年 / 139卷 / 07期

关键词：

D O I：

10.1140/epjp/s13360-024-05417-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Detecting and preventing the illicit movement of radioactive materials within a country is crucial, requiring the identification of radiologic anomalies against the normal radiation background. High-purity germanium (HPGe) detectors, known for their precision and sensitivity, have become popular for analyzing radioactive materials in CBRNe scenarios. This study focused on calibrating an HPGe detector for CBRNe applications, using gamma-ray spectra from an IAEA-U reference source. Energy calibration involved identifying peaks in the spectra and creating a calibration curve for energy and channel number data. Efficiency calibration, determined using the known activity of the source, revealed a linear relationship between energy and detector response. Over four years, systematic efficiency calibrations showed a deviation of only 3% well below the recommended limit of 5%. These findings underscore the reliability of the system as a reference spectrometry method for accurate detection of radioactive materials.

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页数：7

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