基于JMCT软件的中子活化数值模拟程序的开发和检验  

Development and test of neutron activation simulation program based on JMCT software

作　　者：黄孟 朱剑钰[1] 伍钧[1] 张松柏 李瑞[3] 李刚[3] Huang Meng;Zhu Jianyu;Wu Jun;Zhang Songbai;Li Rui;Li Gang(Center for Strategic Studies,China Academy of Engineering Physics,Beijing 100088,China;School of Automation and Information Engineering,Sichuan University of Science&Engineering,Yibin 644005,China;Software Center for High Performance Numerical Simulation,China Academy of Engineering Physics,Beijing 100088,China)

机构地区：[1]中国工程物理研究院战略研究中心,北京100088 [2]四川轻化工大学自动化与信息工程学院,四川宜宾644005 [3]中国工程物理研究院高性能数值模拟软件中心,北京100088

出　　处：《强激光与粒子束》2022年第2期143-150,共8页High Power Laser and Particle Beams

基　　金：四川省科技厅项目(2021YFSF0058)。

摘　　要：中子活化产物和辐射特征的数值模拟程序是研究材料活化效应的重要工具。在JMCT软件的基础上开发了具备材料中子活化效应模拟能力的数值模拟程序,并将其命名为“中子活化数值模拟程序”,旨在将其应用于军控核查、核安全等领域的研究中。对该程序在核弹头内部中子输运和活化计算的准确性进行了验证,发现该程序对核弹头内部中子输运和活化的计算精度优良。利用该程序研究了混凝土地面核素在裂变核材料的裂变中子辐照下的活化效应,计算结果进一步验证了中子活化数值模拟程序的功能。The numerical simulation program of neutron activation products and their radiation characteristics is an important tool to study the activation effect of materials.A numerical simulation program capable of simulating the neutron activation effect of materials was developed through the secondary development of the JMCT software,and it was named“neutron activation simulation program”,which is expected to be applied to the research of arms control verification and nuclear security.The correctness of the neutron activation simulation program in calculating the neutron transport and activation inside nuclear warheads was tested,and the calculation results are accurate.The activation effect of concrete floors under the irradiation of the fission neutrons from fissile materials was studied based on the neutron activation simulation program,and the calculation results furthermore prove the functions of the neutron activation simulation program.

关 键 词：中子活化 数值模拟软件 核弹头核查 核材料 混凝土活化 

分 类 号：O571.53[理学—粒子物理与原子核物理]