|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|5478177||1521738||2017||5 صفحه PDF||سفارش دهید||دانلود کنید|
In this paper, thermal neutrons reflection coefficient has been measured experimentally for water, graphite, polyethylene, and lead reflectors at average incident angle 56â by using 241Am-Be neutron source (5.2Â Ci) and BF3 detector. Based on obtaining experimental data from different thicknesses for four reflectors, the maximum saturation value of the thermal neutron albedo is for polyethylene reflector and the minimum value of spectral shift is for lead reflector. The best reflector is a compromise included both high albedo and low spectral shift which causes to increase the safety of reactor. The measured value for thermal neutron albedo is 0.95Â Â±Â 0.03Â at about 8Â cm reflector thickness. Also, there is suitable agreement achieved between the experimental values and simulation results by using MCNPX Monte Carlo code.
Journal: Progress in Nuclear Energy - Volume 100, September 2017, Pages 192-196