铅铋气溶胶动力学实验平台研制与初步参数测量  

Development of Test Platform for LBE Aerosol Kinetics and Preliminary Parameter Measurement

作　　者：王雨晴 邓理邻[3] 倪木一 武杰伟 谭怡[3] 景福庭[3] 夏明明 田超[3] Wang Yuqing;Deng Lilin;Ni Muyi;Wu Jiewei;Tan Yi;Jing Futing;Xia Mingming;Tian Chao(Sino-French Institute of Nuclear Engineering and Technology,Sun Yat-sen University,Zhuhai,Guangdong,519080,China;Institute of Advanced Science Facilities,Shenzhen,Guangdong,518107,China;Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]中山大学中法核工程与技术学院,广东珠海519080 [2]深圳综合粒子设施研究院,广东深圳518107 [3]中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610213

出　　处：《核动力工程》2024年第1期178-185,共8页Nuclear Power Engineering

基　　金：核反应堆系统设计技术重点实验室运行基金(HT-KFKT-24-2021008);广东省重点研发项目(2021B0101250002)。

摘　　要：铅铋快堆的一回路冷却剂液态铅铋合金(LBE)受中子辐照会产生放射性核素^(210)Po,^(210)Po具有一定挥发性,有必要深入研究^(210)Po的迁移扩散行为。气溶胶是易挥发放射性核素释放的主要载体,本文基于国内外关于反应堆气溶胶实验平台的设计运行经验研制了LBE气溶胶动力学实验平台,通过结合扫描电迁移率法和光学散射法,实现了对LBE气溶胶粒子计数与粒径分布的广谱测量。测量结果表明,LBE气溶胶的粒径分布主要为纳米级。通过对测量结果的数据处理,初步开展了LBE气溶胶动力学分析,从而为铅铋快堆放射性气溶胶的后续安全分析提供关键参数。In Lead-Bismuth Fast Reactors,the primary coolant liquid lead-bismuth eutectic(LBE)is subject to neutron irradiation,which generates the radioactive nuclide polonium(^(210)Po).Given the volatility of^(210)Po,it is essential to thoroughly investigate its migration and diffusion behavior.Aerosols are the primary carriers of volatile radioactive nuclides.Drawing on domestic and international experience in the design and operation of reactor aerosol experimental platforms,this paper presents the development of an LBE aerosol kinetics experimental platform.By combining scanning electrical mobility and optical scattering methods,a broad-spectrum measurement of LBE aerosol particle count and size distribution was achieved.The results indicate that the particle size distribution of LBE aerosols is mainly at the nano-level.Preliminary LBE aerosol kinetics analysis was conducted through data processing of the measurement results,thereby providing key parameters for subsequent safety analysis of radioactive aerosols in Lead-Bismuth Fast Reactors.

关 键 词：铅铋快堆 铅铋合金(LBE) 气溶胶动力学 核素迁移 

分 类 号：TL334[核科学技术—核技术及应用]