摘要
将裂变同位素靶管放入300#反应堆特殊燃料元件盒中辐照。叙述了辐照定位装置的加工以及靶管取放、定位、热电偶导出线固定等详情,测量了轴向中子注量率分布、水隙内和靶管内外壁的中子注量率,刻度了靶管的反应性,分五个功率台阶测量了靶管壁面温度和堆池温度。测量得到的热中子注量率沉降因子与根据生产厂家报告推出的自屏因子基本符合。将计算的和测量的靶管外壁温度进行比较,可认为铀靶生产厂家给出的靶管各热物性参数是准确的。
The fission isotope target tube was irradiated in a special fuel element of SPRR-300. A positioner for the irradiation assembly was made to practise putting, fetching, and locating the tube, and fixing the electric thermo-couples lead wires, and so on. The axial distribution of neutron fluence rate, the neutron fluence rates at the water gap, and outer and inner walls of the tube were measured. After the reactiveness of the tube was obtained, temperatures at the walls of the tube and at water of the reactor pool were measured at five power steps. The thermal neutron fluence subsidence factor measured is basically in conformity with the self-shield factor deduced from the report of the producer of the tube. By comparing temperatures measured of the outer wall of the tube with those calculated, it is thought that the thermo physical parameters given by the tube＇s producer are accurate.
出处
《核技术》
EI
CAS
CSCD
北大核心
2007年第4期277-281,共5页
Nuclear Techniques
