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구형 BGO 섬광 검출기에 대한 감마선 에너지 스텍트럼 계산
도시홍,김종일,박흥기,추민절,정중현,김기동,이대원 ( Sih Hong Doh,Hung Ki Park,Jong Il Kim,Min Cheal Chu,Jung Hyun Jeong,Gi Dong Kim,Dae Won Lee ) 한국센서학회 1995 센서학회지 Vol.4 No.4
The γ-ray deposition spectra were calculated by Monte Calro method to obtain the scintillation characteristics of the γ-ray for BGO scintillation detector with the spherical shape of 1.25 cm radius. The code used in calculating the γ-ray deposition spectra was made for personal computer with qbasic language. Also the γ-ray energy spectra of ^(22)Na, ^(137)Cs and ^(207)Bi were measured with the detector. The energy dependent resolution below 2000 keV for the detector was determined by estimating the standard deviation of the photopeak fitted with gaussian function, and x² fitting using Nardi`s empirical formula. The measured spectra of ^(22)Na and ^(137)Cs were compared with the broadened spectra which were obtained by broadening the calculated γ-ray deposition spectra with the energy dependent resolution. The absolute efficiency and the intrinsic peak efficiency of the detector were obtained by calculating the γ-ray deposition spectrum with the code.