TY - GEN
T1 - Monte carlo simulated the detection efficiency of different H/R ratio of Nai
T2 - 3rd International Conference on Mechanical Automation and Materials Engineering, ICMAME 2014
AU - Hu, Jun Peng
AU - Liu, Fang
AU - Ouyang, Xiao Ping
PY - 2014
Y1 - 2014
N2 - We make use of Monte Carlo simulation to investigate the detection efficiency versus different H/R ratio of NaI: Tl detectors, and the volume of detector is constant. The energy of incident monoenergetic γ rays is 4. 438 MeV, 1. 331 MeV and 0. 662 MeV emitted from AmO2Be, 137Cs and 60Co respectively. The size of NaI: Tl detector dimension is setted up to 20 groups of different radius (H) and height (R), whereas the volume of NaI: Tl crystal will not be changed. The result reveals that the detector efficiency dependence on H/R ratio of the NaI: Tl detector and the incident γ-photon energy. For very low H/R ratio, the detector efficiency increase rapidly and tend to be stable. We draw a conclusion that when the H/R ratio is approximately equal to 1. 5, the incubation effect is more obvious, which contribute to the increase of detection efficiency. It is meaningful of the research, namely, it be beneficial to design the optimal dimension of detector for detecting γ rays of 4. 438 MeV, 1. 331 MeV and 0. 662 MeV. Introduction.
AB - We make use of Monte Carlo simulation to investigate the detection efficiency versus different H/R ratio of NaI: Tl detectors, and the volume of detector is constant. The energy of incident monoenergetic γ rays is 4. 438 MeV, 1. 331 MeV and 0. 662 MeV emitted from AmO2Be, 137Cs and 60Co respectively. The size of NaI: Tl detector dimension is setted up to 20 groups of different radius (H) and height (R), whereas the volume of NaI: Tl crystal will not be changed. The result reveals that the detector efficiency dependence on H/R ratio of the NaI: Tl detector and the incident γ-photon energy. For very low H/R ratio, the detector efficiency increase rapidly and tend to be stable. We draw a conclusion that when the H/R ratio is approximately equal to 1. 5, the incubation effect is more obvious, which contribute to the increase of detection efficiency. It is meaningful of the research, namely, it be beneficial to design the optimal dimension of detector for detecting γ rays of 4. 438 MeV, 1. 331 MeV and 0. 662 MeV. Introduction.
KW - Detection efficiency
KW - H/R ratio
KW - Monte carlo method
UR - https://www.scopus.com/pages/publications/84904332350
U2 - 10.4028/www.scientific.net/AMM.529.391
DO - 10.4028/www.scientific.net/AMM.529.391
M3 - 会议稿件
AN - SCOPUS:84904332350
SN - 9783038350941
T3 - Applied Mechanics and Materials
SP - 391
EP - 394
BT - Mechanical Automation and Materials Engineering II
PB - Trans Tech Publications Ltd
Y2 - 28 June 2014 through 29 June 2014
ER -