钚量热计的研制  

Development of Plutonium Calorimeter

作　　者：罗学建[1] 蒋国强[1] 蒙大桥[1] 史伟[1] 唐洪全[1] 罗文华[1] 

机构地区：[1]中国工程物理研究院,四川绵阳621900

出　　处：《原子能科学技术》2003年第z1期161-165,172,共6页Atomic Energy Science and Technology

摘　　要：设计研制了1台结构简单、操作方便、样品池内径185 mm和高200 mm用于钚热功率测量的量热计。性能测试表明:钚量热计的样品热功率测量下限为4 mW、测量上限高于9 W,灵敏度约为202 mV·W^(-1),线性范围为4 mW～9 W。使用该量热计测量了钚样品的热功率,并与用分析化学和称量法测得的样品热功率进行了比较,结果表明:该量热计测量钚样品热功率具有较高的测量精度,当样品热功率不小于200 mW时,精密度优于0.5％。A simple-structure plutonium calorimeter was developed and the size of sample cell is φ185 mm and high 200 mm. The performance tests show that the sensitivity of calorimeter is about 202 mV · W-1 and the linear scope of the measuring thermal power is from 4 mW to 9 W. The thermal power of plutonium was measured by the calorimeter. And it was compared with that from chemical analysis and weighting method. The results show that a good precision could be expected to measure thermal power of plutonium sample by this apparatus. The precision of the calorimeter is better than 0. 5%, when the thermal power of sample is not lower than 200 mW.

关 键 词：量热计 钚 比对 

分 类 号：O551.1[理学—热学与物质分子运动论]