Study on Scintillator Polishing Technology for Increasing the Detection Efficiency of Radiation Detectors Using Plastic Scintillators

Kim, Jeong-Ho; Joo, Koan-Sik

doi:10.7471/ikeee.2014.18.4.456

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…The methods for detecting radiation are ionization, excitation, scintillation, extinction and a chemical reaction [1]. Radiation detection using scintillator light produced in a material is one of the oldest and most useful techniques for the detection of a variety of radiation [2,3].…”

Section: Introductionmentioning

confidence: 99%

Study on the Characteristics of a Scintillator for Beta-ray Detection using Epoxy Resin

et al. 2017

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Abstract.A thin plate of a plastic scintillator for detecting a beta-ray was developed. The plastic scintillator was made using epoxy resin and organic scintillators such as 2.5-diphenyloxazole (PPO) and 1,4-bis [5-phenyl-2-oxazole] benzene (POPOP). The mixture ratio of epoxy resin and the organic scintillators was determined using their absorbance, transmittance, emission spectra, and transparency. Their optimal weight percentage of PPO and POPOP in the organic scintillators was adjusted to 0.2 wt%:0.01 wt%. The prepared plastic scintillator was used to measure the standard source of Sr-90. The pulse height spectra and total counts of the prepared plastic scintillator were similar to a commercial plastic scintillator. Based on the above results, a large-area plastic scintillator was prepared for rapid investigation of a site contaminated with Sr-90. The prepared large-area plastic scintillator was evaluated for the characteristics in the laboratory. The evaluation results are expected to be usefully utilized in the development of a large-area plastic scintillation detector. The large-area plastic scintillation detector developed on the basis of the evaluation results is expected to be utilized to quickly measure the contamination of Sr-90 in the grounds used as a nuclear power facility.

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Section: Introductionmentioning

confidence: 99%

Study on the Characteristics of a Scintillator for Beta-ray Detection using Epoxy Resin

et al. 2017

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Fabrication of Fiber-optics Detector for Measuring Radioactive Waste

Kim¹,

Joo²

2015

Journal of IKEEE

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In this study, an optical fiber detector was constructed by using a Ce:GAGG scintillator, optical fiber, and photomultiplier. The single crystal size of the scintillator was set to 3 × 3 × 20 mm after simulating the counting efficiency of gamma rays in the scintillator by using the MCNPX code. The constructed detector used the standard gamma ray sources 137 Cs and 133Ba to measure radiation and analyze the spectral characteristics of gamma rays. The resulting trend curve showed excellent linearity with an R-squared value of 0.99741, and the detector characteristics were found to vary 2% or less with distance based on comparison with the MCNPX value. Furthermore, the spectroscopic analysis of the gamma ray energy from the single-ray and mixed-ray sources showed that 137 Cs had its peak energy at 662 keV, and 133 Ba had at 356 keV. It seems that if the fiber-optics detector is used, working hours and exposure of worker can be reduced.

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Study on Detection Characteristics of Gamma Radiation Detector using different Geometry of YSO Scintillator

Kim¹,

Joo²

2016

Journal of IKEEE

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In this study, gamma radiation detectors are created by integrating the following combinations of different YSO scintillators and PMT(photomultiplier-tubes) respectively: 3mm×3mm×2mm, 3mm(Dia)×15mm, 3mm (Dia) ×20mm, 10mm(Dia)×20mm. In addition, the scintillator with a 10mm diameter was integrated with a light guide with a 2mm thickness, 10mm entry and 3mm exit, using LightTools. The constructed detector used the standard gamma ray sources 137 Cs(662keV) to analyze the spectral characteristics of gamma rays. The results indicate that at 662keV, the energy resolutions were 14.46%, 21.10%, and 10.71% for the first three combinations respectively. The best results were recorded for the 10mm(Dia)×20mm detector with light guide, which had an energy resolution of 7.48%. 요 약

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Study on Scintillator Polishing Technology for Increasing the Detection Efficiency of Radiation Detectors Using Plastic Scintillators

Cited by 3 publications

References 3 publications

Study on the Characteristics of a Scintillator for Beta-ray Detection using Epoxy Resin

Study on the Characteristics of a Scintillator for Beta-ray Detection using Epoxy Resin

Fabrication of Fiber-optics Detector for Measuring Radioactive Waste

Study on Detection Characteristics of Gamma Radiation Detector using different Geometry of YSO Scintillator

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