Verification of modified sum-peak method in Monte Carlo simulation of full energy peak and sum-peak efficiencies of a HPGe detector  

作　　者：Tsukasa Aso Yoshimune Ogata Hidesuke Itadzu 

机构地区：[1]College,1-2 Ebie Neriya,Imizu 9330293,Japan [2]Radioisotope Research Center Medical Division,Nagoya University,65 Tsurumai-cho,Showa-ku,Nagoya 4668550,Japan [3]SEIKO EG&G Co.Ltd,1-9 Nakase,Mihama-ku,Chiba 2618507,Japan

出　　处：《辐射防护》2020年第6期527-532,共6页Radiation Protection

摘　　要：The modified sum-peak method estimates radioactivity by using only the peak and the sum-peak count rates.To verify the modified sum-peak method,the dependence of the full energy peak efficiency on the source-to-detector distance in a high-purity germanium detector system was studied using a Geant4 Monte Carlo simulation.The effect of the deadlayer in the germanium crystal was estimated by reference to experiments on 241 Am and the relative efficiency of the detector.The peak efficiency dependence on the source-to-detector distance was compared between the simulation and measurements.The modified sum-peak method is discussed with respect to these peak efficiencies.

关 键 词：Geant4 Monte Carlo simulation sum-peak method peak efficiency HPGE 60Co 

分 类 号：TL81[核科学技术—核技术及应用]