采用无源符合中子法测量含钚材料  

TOTAL Pu MEASUREMENT IN MATERIAL WITH PASSIVE COINCIDENCE NEUTRON COUNT

作　　者：王效忠[1] 贾向军[1] 刘建刚 谭亚军[1] 张文良[1] 李泽[1] 

机构地区：[1]中国原子能科学研究院放射化学研究所

出　　处：《原子能科学技术》1998年第3期233-238,共6页Atomic Energy Science and Technology

基　　金：核工业总公司基金

摘　　要：研究了无源符合中子法测量不同含Ｐｕ材料的方法和技术。采用高计数率符合中子计数器测量材料中的２４０Ｐｕ等核素自发裂变产生的裂变中子，通过计算等效２４０Ｐｕ量来确定材料中的总含Ｐｕ量。在现场实测了含Ｐｕ炉渣等十多类各种物理形态的材料。讨论了测量数据的修正及误差来源。测量误差一般在８％—１１％，大部分结果与天平称重估算法在１０％内符合。The measurement technique for some plutonium bearing material is described. The coincidence count of the spontaneous neutron of even mass Pu isotope was measured with a high level neutron coincidence counter. The total Pu in material is calculated out in term of the effective 240 Pu mass and Pu isotope composition. The plutonium in some materials (such as oxide, powder, waste, alloy,etc.) of one facility have been measured. Some of uncertain ties in measurement were discussed. The uncertainty of Pu isotope composition is one of main uncertainty and the total uncertain of the data is mostly between 8 %-11 %. The most of data are consistent in 10 % with declared value.

关 键 词：无源符合中子法 钚240 含钚材料 NDA分析 

分 类 号：TL273[核科学技术—核燃料循环与材料]