SPECTRA AND FLUXES ATTENUATION OF 14 MEV NEUTRONS IN IRON GRAPHITE SHIELDS

被引：2

作者：

MEGAHID, RM ^{[1
]}

KANY, AMI ^{[1
]}

ABDO, AE ^{[1
]}

KANY, MSMI ^{[1
]}

机构：

[1] AL-AZHAR UNIV,FAC SCI,DEPT PHYS,CAIRO,EGYPT

来源：

RADIATION PHYSICS AND CHEMISTRY | 1994年 / 44卷 / 1-2期

关键词：

D O I：

10.1016/0969-806X(94)90115-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Twenty-two group calculations were made to study the attenuation and energy degradation of rast neutrons in homogeneous and laminated shields of iron-graphite, in the form of a sphere having a monoenergetic point neutron source of 14 MeV produced from T(D, n)He reaction at its centre. Calculations were performed with the multigroup diffusion and removal diffusion equations in one dimension. The multigroup cross-section set was taken from the ENDF/B-IV cross-section library. Results were presented only for neutrons of energies from 14 to 0.4 MeV. The relaxation lengths for fast neutrons of different energy groups were determined from the attenuation curves by the ''least square fit''.

引用

页码：109 / 114

页数：6