In situ beta-gamma separation algorithm for cost-effective assessment of radioactive waste resources

Jun Woo Bae; Hee Reyoung Kim

doi:10.1002/er.4229

In situ beta-gamma separation algorithm for cost-effective assessment of radioactive waste resources

Jun Woo Bae, Hee Reyoung Kim

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

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.

Original language	English
Pages (from-to)	4761-4769
Number of pages	9
Journal	International Journal of Energy Research
Volume	42
Issue number	15
DOIs	https://doi.org/10.1002/er.4229
State	Published - Dec 2018
Externally published	Yes

Funding

This work was supported in part by the Industrial Technology Innovation Program (Real‐Time Underwater Tritium Monitoring Technology by Electrolysis) through the Korea Institute of Energy Technology Evaluation and Planning under Grant 2016520101340, and in part by the National Research Foundation of Korea through the Korean Government (MSIP: Ministry of Science, ICT and Future Planning) under Grant 2016M2B2B1945083.

Funders	Funder number
Ministry of Science, ICT and Future Planning	2016M2B2B1945083
National Research Foundation of Korea
Korea Institute of Energy Technology Evaluation and Planning	2016520101340

Keywords

beta ray
bismuth germanate
gamma ray
plastic scintillator
radiation measurement
radioactive waste assessment

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10.1002/er.4229

Cite this

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title = "In situ beta-gamma separation algorithm for cost-effective assessment of radioactive waste resources",

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.",

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AU - Kim, Hee Reyoung

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AB - 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.

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KW - radioactive waste assessment

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In situ beta-gamma separation algorithm for cost-effective assessment of radioactive waste resources

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