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김희령

Kim, Hee Reyoung
RAdiation and MagnetohydroDynamics Advanced Lab.
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In situ beta-gamma separation algorithm for cost-effective assessment of radioactive waste resources

Author(s)
Bae, Jun WooKim, Hee Reyoung
Issued Date
2018-12
DOI
10.1002/er.4229
URI
https://scholarworks.unist.ac.kr/handle/201301/25179
Fulltext
https://onlinelibrary.wiley.com/doi/full/10.1002/er.4229
Citation
INTERNATIONAL JOURNAL OF ENERGY RESEARCH, v.42, no.15, pp.4761 - 4769
Abstract
A method for discriminating between the counting rates attributable to beta rays and gamma rays was proposed. The method was based on the characterization of the sensitivity ratios of multiple scintillators. Four scintillators were used in this study: 10 and 20-mm bismuth germanate and plastic scintillators. The sensitivity ratios of two scintillators with different elemental compositions can provide more information related to the energy of the incident photon, and scintillators with different thicknesses can provide a constant parameter which is necessary in the calculation of the beta-ray and gamma-ray counting fractions. A mixed source containing 60Co and 90Sr was used to estimate the accuracy of the proposed method. The gamma-ray counting fraction was successfully deduced with a relative error of 2.01%. The method is expected to be used for cost-effective assessment of radioactive waste resources and conservative estimation of the radioactivity of pure beta-emitting radionuclides.
Publisher
WILEY-BLACKWELL
ISSN
0363-907X
Keyword (Author)
beta raybismuth germanategamma rayplastic scintillatorradiation measurementradioactive waste assessment

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