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Performance Evaluation of a Plastic Scintillator for Making a In-situ Beta Detector
New Physics: Sae Mulli 2017; 67: 1080~1085
Published online September 29, 2017;
© 2017 New Physics: Sae Mulli.

Jong Soo NAM1,2, Yong Uhn KIM*1, Sang Bum HONG2, Bum Kyung SEO2, Ki Hwan KIM3

1 Department of Physics, ChungBuk National University, Cheongju 28644, Korea 
2 Korea Atomic Energy Research Institute, Daejeon 34057, Korea
3 Department of Radiation Oncology, Chungnam National University Hospital, Daejeon 35015, Korea
Correspondence to:
Received April 21, 2017; Revised August 22, 2017; Accepted August 28, 2017.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
In this study, a plastic scintillator was fabricated to design a radiation detector for in-situ measurement of radioactivity at a site contaminated with radionuclides emitting beta-rays, such as $^{90}$Sr or $^{238}$U, in a nuclear power plant at the end of its life cycle or a nuclear accident such as that at Fukushima. The performance of the fabricated plastic scintillators was evaluated. The plastic scintillator PS-0201 fabricated by mixing 0.2 wt% of PPO and 0.01 wt% of POPOP in epoxy was found to have good beta-ray absorption, as well as light emission and transmittance, characteristics comparable to thoose of commercial plastic scintillator BC-40004. Scanning electron microscope images confirmed that the homogeneity of the surface and the cutting plane of the plastic scintillator PS-0201 fabricated in this study was superior to that of BC-40004.
PACS numbers: 29.40.Mc
Keywords: In-situ, Beta detector, Plastic scintillator

September 2017, 67 (9)