Neutron absorption profile in a reactor moderated by different mixtures of light and heavy waters

被引：3

作者：

Nagy, Mohamed E. ^{[1
]}

Aly, Mohamed N. ^{[1
]}

Gaber, Fatma A. ^{[2
]}

Dorrah, Mahmoud E. ^{[2
]}

机构：

[1] Univ Alexandria, Fac Engn, Dept Nucl & Radiat Engn, Alexandria 21544, Egypt

[2] Nucl & Radiol Regulatory Author, Dept Radiat Safety, Nasr City Cairo, El Zohour Regio, Egypt

来源：

ANNALS OF NUCLEAR ENERGY | 2014年 / 72卷

关键词：

Mixed water moderator; Nuclear reactor; LR-0; reactor; Heavy water; Control rods; Absorption spectra;

D O I：

10.1016/j.anucene.2014.06.005

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

A Monte-Carlo parametric study was carried out to investigate the neutron absorption profile in a model of LR-0 reactor when it is moderated by different mixtures of heavy/light waters at molecular ratios ranging from 0% up to 100% D2O at increments of 10% in D2O. The tallies included; neutron absorption profiles in control rods and moderator, and neutron capture profile in U-238. The work focused on neutron absorption in control rods entailing; total mass of control rods needed to attain criticality, neutron absorption density and total neutron absorption in control rods at each of the studied mixed water moderators. The aim was to explore whether thermal neutron poisons are the most suitable poisons to be used in control rods of nuclear reactors moderated by mixed heavy/light water moderators. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：487 / 496

页数：10

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