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Rapid detection method of radioactive source based on low-count gamma spectra.docx (550.79 kB)

Rapid detection method of radioactive source based on low-count gamma spectra

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posted on 19.08.2021, 13:38 by Yonggang Yuan, Jinhui Qu, Jingtao He, Zhaoyi Tan, Yixin LiuYixin Liu
In order to solve the problem of searching a radioactive source in a wide area, we developed a mobile CsI detector. This paper presented the performance of the detector during the spectra collection investigation. The 1 s spectrum collected by the detector was low-count spectrum and it is hard to distinguish whether it contains radioactive source signals. A rapid detection method of radioactive source based on low-count gamma spectra was proposed. Principal component analysis (PCA) was the key technology of the method. According to the PCA, the source information was efficiently extracted. With the method, the detect sensitivity and accuracy of the detector were optimized.

Funding

Research on Small-scale Neutron Reference Radiation and Its Application

National Natural Science Foundation of China

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Email Address of Submitting Author

liuyx123456789@126.com

ORCID of Submitting Author

0000-0002-2716-334X

Submitting Author's Institution

Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics

Submitting Author's Country

China

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