Geant4 and MCNPX simulations of thermal neutron detection with planar silicon detectors

被引：22
|
作者：
Guardiola, C. [1 ]
Amgarou, K. [2 ]
Garcia, F. [3 ]
Fleta, C. [1 ]
Quirion, D. [1 ]
Lozano, M. [1 ]
机构：
[1] CSIC, IMB CNM, Grp Detectores Radiac, Barcelona 08193, Spain
[2] Univ Autonoma Barcelona, Dept Fis, E-08193 Barcelona, Spain
[3] Univ Helsinki, Helsinki Inst Phys, FIN-00014 Helsinki, Finland
来源：
JOURNAL OF INSTRUMENTATION | 2011年 / 6卷
关键词：
Solid state detectors; Simulation methods and programs; Neutron detectors (cold; thermal; fast neutrons); Detector modelling and simulations I (interaction of radiation with matter; interaction of photons with matter; interaction of hadrons with matter; etc);
D O I：
10.1088/1748-0221/6/09/T09001
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We used Geant4 and MCNPX codes to evaluate the detection efficiency of planar silicon detectors coupled to different Boron-based converters with varied compositions and thicknesses that detect thermal neutrons via the B-10(n, alpha)Li-7 nuclear reaction. Few studies about the thermal neutron transport in Geant4 have been reported so far and it is becoming increasingly difficult to ignore its discrepancies with MCNPX in this neutron energy range. In the thermal energy range, Geant4 shows high discrepancies with MCNPX giving a maximum efficiency of about 3.3% in the B-10 case whereas that obtained with MCNPX was 5%. Disagreements obtained between both codes in this energy range are analyzed and discussed.
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收藏
页数：16
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