中子辐照条件下表层污垢碳化硅包壳的初级离位原子能量分布研究  

Study on the Energy Distribution of Primary Dislocated Atoms in the Surface Fouling Silicon Carbide Cladding under Neutron Irradiation

作　　者：李志峰 罗幸祺 LI Zhifeng;LUO Xingqi(China Nuclear Power Technology Research Institute Co.,Ltd.,Shenzhen of Guangdong Prov.518026,China;South China University of Technology,Guangzhou of Guangdong Prov.510641,China)

机构地区：[1]中广核研究院有限公司,广东深圳518026 [2]华南理工大学,广东广州510641

出　　处：《核科学与工程》2023年第1期12-18,共7页Nuclear Science and Engineering

基　　金：广东省基础与应用基础研究基金(2020B1515120035,2021A1515010265,2022A1515011462)。

摘　　要：本文采用了蒙卡方法对中子辐照以下的表层污垢碳化硅的初级离位原子(PKA)进行研究,利用蒙卡方法模拟中子的运行轨迹,碰撞类型与能量变化,以此根据动量能量守恒来反推出被撞击原子形成PKA的过程以及计算出PKA的能谱与散射角,并与推导出的理论公式的计算值进行对比。本次模拟共采用了几种能量的中子(0.1 MeV、0.5 MeV、1 MeV、1.5 MeV、2 MeV、4 MeV)分别进行模拟,给出了中子辐照条件下碳和硅两种元素的PKA的能量分布图,本文给出的模拟数据也与公式推导理论值吻合较好。This article adopted the Monte Carlo method to simulate the neutron irradiation of silicon carbide PKA,such as the neutron track,collision type and energy changes,which are deduced according to the momentum conservation of energy was the impact process of PKA of atom and the energy spectrum of the calculated PKA and scattering angle,and compared with the calculated value of the theoretical formula is deduced.A total of seven energy neutrons(0.1 MeV,0.5 MeV,1 MeV,1.5 MeV,2 MeV,4 MeV)were used for the simulation,respectively.After obtaining the data,the energy spectrum of carbon and silicon elements were made respectively,and the simulated data were also in good agreement with the data derived from the formula.

关 键 词：初级离位原子 蒙特卡罗方法 能量分布 碳化硅 

分 类 号：TL32[核科学技术—核技术及应用]