Feasibility study on fiber-optic inorganic scintillator array sensor system for multi-dimensional scanning of radioactive waste

We developed a miniaturized multi-dimensional radiation sensor system consisting of an inorganic scintillator array and plastic optical fibers. This system can be applied to remotely obtain the radioactivity distribution and identify the radionuclides in radioactive waste by utilizing a scanning met...

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Bibliographic Details
Published in:Nuclear engineering and technology 2023, 55(9), , pp.3206-3212
Main Authors: Park, Jae Hyung, Song, Siwon, Kim, Seunghyeon, Kim, Jinhong, Cho, Seunghyun, Pyeon, Cheol Ho, Lee, Bongsoo
Format: Article
Language:English
Subjects:
Inorganic scintillator array
Multi-dimensional
Plastic optical fiber
Radioactive waste
Remote sensing
Scanning method
원자력공학
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Summary:We developed a miniaturized multi-dimensional radiation sensor system consisting of an inorganic scintillator array and plastic optical fibers. This system can be applied to remotely obtain the radioactivity distribution and identify the radionuclides in radioactive waste by utilizing a scanning method. Variation in scintillation light was measured in two-dimensional regions of interest and then converted into radioactivity distribution images. Outliers present in the images were removed by using a digital filter to make the hot spot location more accurate and cubic interpolation was applied to make the images smoother and clearer. Next, gamma-ray spectroscopy was performed to identify the radionuclides, and three-dimensional volume scanning was also performed to effectively find the hot spot using the proposed array sensor.
ISSN:1738-5733
2234-358X
DOI:10.1016/j.net.2023.06.002