Nuclear Engineering and Technology

  • 제54권5호
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  • Pages.1754-1759
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  • 2022
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Source and LVis based coincidence summing correction in HPGe gamma-ray spectrometry

  • Lee, Jieun (Research Center, Dongnam Institute of Radiological and Medical Sciences) ;
  • Kim, HyoJin (Research Center, Dongnam Institute of Radiological and Medical Sciences) ;
  • Kye, Yong Uk (Research Center, Dongnam Institute of Radiological and Medical Sciences) ;
  • Lee, Dong Yeon (Research Center, Dongnam Institute of Radiological and Medical Sciences) ;
  • Kim, Jeung Kee (Research Center, Dongnam Institute of Radiological and Medical Sciences) ;
  • Jo, Wol Soon (Research Center, Dongnam Institute of Radiological and Medical Sciences) ;
  • Kang, Yeong-Rok (Research Center, Dongnam Institute of Radiological and Medical Sciences)
  • 투고 : 2021.07.07
  • 심사 : 2021.11.07
  • 발행 : 2022.05.25
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초록

The activity of gamma-ray emitting nuclides is calculated assuming that each gamma-ray is detected individually; thus, the magnitude of the coincidence summing signal must be considered during activity calculations. Here, the correction factor for the coincidence summing effect was calculated, and the detection efficiencies of two HPGe detectors were compared. The CANBERRA Inc. GC4018 high-purity Ge detector provided an estimate for the peak-to-total ratio using a point source to determine the coincidence summing correction factor. The ORTEC Inc. GEM60 high-purity Ge detector uses EFFTRAN in LVis to obtain the parameters of the detector and source model and the gamma-gamma and gamma-X match estimates, in order to determine the coincidence summing correction factor. Nuclide analyses, radioactivity comparisons, and analyses of reference material samples were performed utilizing certified reference materials to accurately determine the detection efficiencies. For both Co-60 and Y-88, the detection efficiency for a point source increased by an average of at least 12-13%, whereas the detection efficiency determined using LVis increased by an average of at least 13-15%. The calculated radioactivity values of the certified reference material and reference material samples were accurate to within 3% and 6% of the measured values, respectively.

키워드

과제정보

This work was supported by the Dongnam Institute of Radiological & Medical Sciences (DIRAMS) grant funded by the Korean Government (MSIT) (No. 50494-2021).

참고문헌

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