Calculation of thermal neutron albedo for mono-material and bi-material reflectors  

作　　者：Sara Azimkhani Farhad Zolfagharpour Farhood Ziaie 

机构地区：[1]Department of Physics, University of Mohaghegh Ardabili [2]Radiation Application Research School, Nuclear Science & Technology Research Institute

出　　处：《Nuclear Science and Techniques》2018年第9期185-191,共7页核技术（英文）

摘　　要：Thermal neutron albedo has been investigated for different thicknesses of mono-material and bi-material reflectors. An equation has been obtained for a bi-material reflector by considering the neutron diffusion equation. The bi-material reflector consists of binary combinations of water, graphite, lead, and polyethylene. An experimental measurement of thermal neutron albedo has also been conducted for mono-material and bi-material reflectors by using a^(241) Am–Be(5.2 Ci) neutron source and a BF3 detector. The maximum value of thermal neutron albedo was obtained for a polyethylene–water combination(0.95 ± 0.02).Thermal neutron albedo has been investigated for different thicknesses of mono-material and bi-material reflectors. An equation has been obtained for a bi-material reflector by considering the neutron diffusion equation. The bi-material reflector consists of binary combinations of water, graphite, lead, and polyethylene. An experimental measurement of thermal neutron albedo has also been conducted for mono-material and bi-material reflectors by using a^(241) Am–Be(5.2 Ci) neutron source and a BF3 detector. The maximum value of thermal neutron albedo was obtained for a polyethylene–water combination(0.95 ± 0.02).

关 键 词：NEUTRON current BI-MATERIAL REFLECTOR Thermal NEUTRON ALBEDO BF3 detector Reflection Diffusion equation 

分 类 号：TL[核科学技术]