Journal of Radiation Industry (방사선산업학회지)

Korean Society of Radiation Industry (한국방사선산업학회)
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Optimization of the Wavelength Shifter Ratio in a Polystyrene Based Plastic Scintillator through Energy Spectrum Analysis

에너지스펙트럼 분석을 통한 폴리스타이렌 기반 플라스틱 섬광체의 파장쉬프터 비율 최적화

  • Kim, Yewon (Department of Nuclear & Quantum Engineering, KAIST) ;
  • Moon, Myungkook (Neutron Instrumentation Division, Korea Atomic Energy Research Institute) ;
  • Kim, Myung Soo (Department of Nuclear & Quantum Engineering, KAIST) ;
  • Yoo, Hyunjun (Department of Nuclear & Quantum Engineering, KAIST) ;
  • Lee, Daehee (Department of Nuclear & Quantum Engineering, KAIST) ;
  • Cho, Gyuseong (Department of Nuclear & Quantum Engineering, KAIST)
  • 김예원 (한국과학기술원 원자력 및 양자 공학과) ;
  • 문명국 (한국원자력연구원 중성자 계측부) ;
  • 김명수 (한국과학기술원 원자력 및 양자 공학과) ;
  • 유현준 (한국과학기술원 원자력 및 양자 공학과) ;
  • 이대희 (한국과학기술원 원자력 및 양자 공학과) ;
  • 조규성 (한국과학기술원 원자력 및 양자 공학과)
  • Received : 2016.09.06
  • Accepted : 2016.11.05
  • Published : 2016.12.31

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Abstract

The scintillation efficiency of the polystyrene based plastic scintillator depends on the ratio of the wavelength shifters, organic fluors(PPO and POPOP). Thus, 24 samples of the plastic scintillator were fabricated in order to find out the optimum ratio of the wavelength shifters in the plastic scintillator. The fabricated plastic scintillators were trimmed through a cutting and polishing process. They were used in gamma energy spectrum measurement with the $^{137}Cs$ emitting mono-energy photon with 662 keV for the comparison of the scintillation efficiency. As a result, it was found out that the scintillator sample with 1.00 g of PPO (2,5-Diphenyloxazole) and 0.50 g of POPOP (1,4-Bis(5-phnyl-2oxidazolyl)benzene) dissolved in 100 g of styrene solution has the optimum ratio in terms of the light yield of the polystyrene based plastic scintillator.

Keywords

Acknowledgement

Supported by : 미래창조과학부