Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume 880, Issue -, Pages 22-27Publisher
ELSEVIER
DOI: 10.1016/j.nima.2017.09.043
Keywords
HPGe detector; Low background shielding system; Summing coincidence; GEANT4
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Funding
- National Natural Science Foundation of China [11375023, 11575018, 11475014]
- National Key R&D Program of China [2016YFA0400501]
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A Monte Carlo method based on the GEANT4 toolkit has been developed to correct the full-energy peak (FEP) efficiencies of a high purity germanium (HPGe) detector equipped with a low background shielding system, and moreover evaluated using summing peaks in a numerical way. It is found that the FEP efficiencies of Co-60, Ba-133 and Eu-152 can be improved up to 18% by taking the calculated true summing coincidence factors (TSCFs) correction into account. Counts of summing coincidence gamma peaks in the spectrum of Eu-152 can be well reproduced using the corrected efficiency curve within an accuracy of 3%. (c) 2017 Elsevier B.V. All rights reserved.
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