热压微晶碳化硼材料中子屏蔽性能仿真  

Simulation of Neutron Shielding Performance of Hot-Pressed Microcrystalline Boron Carbide Material

作　　者：马丹丹[1] 秦湘阁[2] MA Dan-dan;QIN Xiang-ge(Public Teaching Department of Information Science Jiamusi University,Jiamusi Heilongjiang 154007,China;School of Materials Science and Engineering Jiamusi University,Jiamusi Heilongjiang 154007,China)

机构地区：[1]佳木斯大学信息电子技术学院,黑龙江佳木斯154007 [2]佳木斯大学材料科学与工程学院,黑龙江佳木斯154007

出　　处：《计算机仿真》2022年第2期288-292,共5页Computer Simulation

摘　　要：在蒙特卡洛模拟程序中构建三维仿真模型,对热压微晶碳化硼材料的中子屏蔽性能进行模拟仿真。仿真结果表明,碳化硼在材料中的含量直接影响着中子的投射系数,可以通过调整材料中碳化硼的含量,改善中子屏蔽效果;在普通材料的高能中子区和低能中子区添加相同含量的碳化硼,对中子屏蔽性能产生的影响存在差异,高能中子的屏蔽性能优于低能中子的屏蔽性能;中子屏蔽性能也受屏蔽体材料厚度的影响,将碳化硼添加到普通材料中,可以提高屏蔽效果,降低屏蔽材料的厚度,且屏蔽厚度与碳化硼含量之间呈反比。A three-dimensional simulation model is built in the Monte Carlo simulation program to simulate the neutron shielding performance of hot-pressed microcrystalline boron carbide. The simulation results show that the content of boron carbide in the material directly affects the neutron projection coefficient, and the neutron shielding effect can be improved by adjusting the content of boron carbide in the material. Adding the same amount of boron carbide in the high energy neutron region and low energy neutron region of common materials has different effects on the neutron shielding performance. The shielding performance of high-energy neutrons is better than that of low-energy neutrons. The neutron shielding performance is also affected by the thickness of the shielding material. Adding boron carbide to common materials can improve the shielding effect and reduce the thickness of the shielding material, and the shielding thickness is inversely proportional to the boron carbide content.

关 键 词：热压微晶碳化硼 中子屏蔽性能 蒙特卡洛模拟程序 投射系数 屏蔽体材料 

分 类 号：TB321[一般工业技术—材料科学与工程]