Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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True coincidence summing correction factor for point source geometry with PHITS

  • Esra Uyar (Gazi University, Faculty of Sciences, Department of Physics)
  • Received : 2023.04.11
  • Accepted : 2023.08.16
  • Published : 2023.12.25
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Abstract

In this study, it has been shown that the true coincidence summing correction factor can be obtained for the first time using the PHITS Monte Carlo program. Determining this correction factor using different methods and tools in each laboratory to increase the possibility of achieving high-efficiency measurement conditions is still popular in gamma-ray spectrometry. By using 133Ba, 152Eu, 134Cs, and 60Co point sources, the true coincidence summing factor was investigated in both near and far counting geometries for 15 different energy values. GESPECOR software was used to validate the results obtained with PHITS. A remarkable agreement was obtained between PHITS and GESPECOR, with a discrepancy of less than 3%. With this study, a new tool has been proposed to obtain the true coincidence summing factor, which is one of the significant correction factors investigated/calculated in gamma-ray spectrometric studies.

Keywords

Acknowledgement

Experimental measurements of this study were carried out at the Turkish Energy, Nuclear and Mining Research Authority (TENMAK), Nuclear Energy Research Institute, Gama Spectroscopy Laboratory within the scope of the cooperation protocol signed between TENMAK and Gazi University Faculty of Science. The author wants to express her sincere thanks to Hasan Dikmen from TENMAK for his sharing of information on coincidence summing correction and to the PHITS Office for valuable suggestions.

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