Calibration HPGe detector using IAEA-U source for CBRNe

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...

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Bibliographic Details
Published in:European physical journal plus 2024-07, Vol.139 (7), p.654, Article 654
Main Authors: Siqueira Nascimento, Debora, Chierici, Andrea, Ciolini, Riccardo, Chiappini, Stefano, d’Errico, Francesco, Chiappini, Massimo
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Atomic
Calibration
Complex Systems
Condensed Matter Physics
Consequences and Recovery
Efficiency
Energy
Environmental monitoring
Focus Point on CBRNE Events: Prevention
Gamma rays
Germanium
Mathematical and Computational Physics
Mitigation
Molecular
Monte Carlo simulation
Motion perception
Optical and Plasma Physics
Physics
Physics and Astronomy
Radiation
Radioactive materials
Reference materials
Regular Article
Scientific imaging
Sensors
Spectra
Spectrometry
Theoretical
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Summary: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. Graphical abstract
ISSN:2190-5444
2190-5444
DOI:10.1140/epjp/s13360-024-05417-3