Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Flexible liquid light-guide-based radiation sensor with LaBr3:Ce scintillator for remote gamma-ray spectroscopy

  • Jae Hyung Park (School of Energy Systems Engineering, Chung-Ang University) ;
  • Siwon Song (School of Energy Systems Engineering, Chung-Ang University) ;
  • Seunghyeon Kim (School of Energy Systems Engineering, Chung-Ang University) ;
  • Taeseob Lim (School of Energy Systems Engineering, Chung-Ang University) ;
  • Jinhong Kim (School of Energy Systems Engineering, Chung-Ang University) ;
  • Bongsoo Lee (School of Energy Systems Engineering, Chung-Ang University)
  • Received : 2022.08.30
  • Accepted : 2022.11.16
  • Published : 2023.03.25
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Abstract

In this study, we fabricated a liquid light-guide-based radiation sensor with a LaBr3:Ce scintillator for remote gamma-ray spectroscopy. We acquired the energy spectra of Cs-137 and Co-60 using the proposed sensor, estimated the energy resolutions of the full energy peaks, and compared the scintillation light output variations. The major peaks of the radionuclides were observed in each result, and the estimated energy resolutions were similar to that of a general NaI(Tl) scintillation detector without a liquid light guide. Moreover, we showed the relationships of energy resolution and analog-to-digital channel regarding the number of photoelectrons produced and confirmed the effects of light guide length on remote gamma-ray spectroscopy. The proposed sensor is expected to be utilized to perform remote gamma-ray spectroscopy for distances of 3 m or more and would find application in many fields of nuclear facilities and industry.

Keywords

Acknowledgement

This research was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean government (MOTIE) (No. 20201520300060) and the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. 2020M2D2A2062457, 2022M2D4A1084440).

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