HFETR辐照生产放射性63Ni材料能力研究  

Study on Production Capacity of 63Ni by HFETR Irradiation

作　　者：周春林[1] 李海涛[1] 张江云[1] 陈亮[1] 李可天 赖立斯 赵家强[1] 刘鹏[1] 魏甫 Zhou Chunlin;Li Haitao;Zhang Jiangyun;Chen Liang;Li Ketian;Lai Lisi;Zhao Jiaqiang;Liu Peng;Wei Fu(Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]中国核动力研究设计院,成都610213

出　　处：《核动力工程》2020年第2期168-172,共5页Nuclear Power Engineering

摘　　要：为实现放射性同位素63Ni的自主化生产,利用反应堆物理计算程序建立符合高通量工程试验堆(HFETR)实际运行的平衡堆芯物理模型,模拟在HFETR内4个典型位置处辐照天然镍靶和高纯62Ni靶生产放射性同位素63Ni的过程。结果表明,高纯62Ni为最合适的靶材,元件层铍中孔(K14)是最佳辐照位置;高纯62Ni靶生产高比活度的63Ni材料(≥5.55×10^11 Bq/g)所需最短辐照时间为60炉段;辐照产生的放射性同位素63Ni中杂质核素含量低;辐照过程中K14位置的靶件芯体释热率最大,达到9.73 W/g。最后,本文提出了分段装载分段出堆的连续批量化生产方案设想,可为后续工程化生产线设计提供技术支撑。To complete the production of radioisotope 63 Ni based on self-reliance,the reactor physical calculation program is used to establish a balanced core model of HFETR.The process of irradiating natural nickel and high-purity 62 Ni to produce 63 Ni at four typical in-pile locations is simulated.The results show that high purity 62 Ni is the most suitable target material.The central channel of K14 fuel element is the best irradiation position.The high specific activity 63 Ni(≥5.55×10^11 Bq/g)is produced by high purity 62 Ni target with irradiation time about 60 cycles;The radioactive isotope 63 Ni produced by irradiation has low impurity nuclide content;The target at K14 position during the irradiation has the highest heat release rate of 9.73 W/g.Furthermore,a continuous batch production plan for segmented loading and segmentation is proposed,which can provide technical support for the subsequent engineering production line design.

关 键 词：HFETR 63Ni 辐照生产 物理计算 

分 类 号：TL92[核科学技术—核燃料循环与材料]