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자료유형
학술저널
저자정보
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제50권 제5호
발행연도
2018.1
수록면
801 - 805 (5page)

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In this study, an underwater radiation detector was built using a GAGG(Ce) scintillator and siliconphotomultiplier to establish an underwater radiation exposure monitoring system. The GAGG(Ce)scintillator is suitable for small radiation detectors as it strongly absorbs gamma rays and has a high lightemission rate with no deliquescent properties. Additionally, the silicon photomultiplier is a light sensorwith characteristics such as small size and low applied voltage. Further, a program and mobile app weredeveloped to monitor the radiation coefficient values generated from the detector. According to theresults of the evaluation of the characteristics of the underwater radiation monitoring system, whentested for its responsiveness to radiation intensity and reactivity, the system exhibited a coefficient ofdetermination of at least 0.99 with respect to the radiation source distance. Additionally, when tested forits underwater environmental temperature dependence, the monitoring system exhibited an increase inthe count rate up to a certain temperature because of the increasing dark current and a decrease in thecount rate because of decreasing overvoltage. Extended studies based on the results of this study areexpected to greatly contribute to immediate and continuing evaluation of the degree of radioactivecontamination in underwater environments.

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