摘要
为了提高14MeV中子的热化效率,采用MCNP模拟,用多种材料、多层结构的组合对其慢化.用铅反射中子、慢化快中子,用镁聚集热中子,用水慢化中子.MCNP模拟结果显示,快中子反射层、快中子慢化层、热中子聚集层以及中子反射层可以使热化效率分别提高185%,37%,80%和538%.
In order to improve the system’s thermalization efficiency（STE） for 14 MeV neutrons,the system with multiple layers and several materials was studied in this paper.Lead was used to reflect neutrons and moderate fast neutrons,magnesium was used to collect thermal neutrons,and water was used to moderate neutrons.The simulation results reveal that fast neutron reflection layer,fast neutron moderator layer,thermal neutron collection layer and neutron reflection layer can increase the STE by about 185%,37%,80%,538%,respectively.
出处
《东北师大学报（自然科学版）》
CAS
CSCD
北大核心
2012年第3期78-81,共4页
Journal of Northeast Normal University(Natural Science Edition)
基金
国家重点基础研究发展计划项目(2007CB815005)
关键词
14
MeV中子
热化效率
反射层
慢化层
聚集层
14 MeV neutron； thermalization efficiency； reflection layer； moderator layer； collection layer
