| 大体积低能β量热装置研制 |
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| 引用本文： | 贾伟江,赵增侨,李星垣,张廷生,刘红明. 大体积低能β量热装置研制[J]. 核动力工程, 2003, 24(5): 467-470 |
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| 作者姓名： | 贾伟江 赵增侨 李星垣 张廷生 刘红明 |
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| 作者单位： | 中国核动力研究设计院,成都,610005 |
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| 摘 要： | 为了实现大体积样品放射性活度的非破坏性测量．研制了大体积低能β量热装置。该装置采用工作于伺服控制方式的等温型量热计原理．测量腔体积约3200cm3，热功率测量范豳30-2000mW.装置的实验验证表明：当热功率为300mW时，测量结果的扩展不确定度好于0．4％，平均测量时间小于3．5h。本文描述了装置的测量原理、系统组成、校准方法、性能测试及测量不确定度分析等。
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| 关 键 词： | 量热装置 放射性活度测量 热功率 温控系统 |
| 文章编号： | 0258-0926(2003)05-0467-05 |
| 修稿时间： | 2002-09-01 |
Development of A Large Calorimeter for Measuring Low Energy Beta-activity |
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| JIA Wei-jiang,ZHAO Zeng-qiao,LI Xing-yuan,ZHANG Ting-sheng,LIU Hong-ming. Development of A Large Calorimeter for Measuring Low Energy Beta-activity[J]. Nuclear Power Engineering, 2003, 24(5): 467-470 |
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| Authors: | JIA Wei-jiang ZHAO Zeng-qiao LI Xing-yuan ZHANG Ting-sheng LIU Hong-ming |
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| Abstract: | A large calorimeter is developed to measure nondestructively low-energy Beta-activity of large volume radioactive samples. The Isothermal calorimeter operating as servo-control mode has the capac-ity for measurement of 3200ml volume. It is designed to measure a thermal power ranging from 30mW to 2000mW. It has an expanded uncertainty of less than 0.4% relative for a single measurement and can com-plete a measurement within 3.5h. This paper discusses the measurement principle, structure, electrical cali-bration, performance test and uncertainty analysis of the calorimeter. |
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| Keywords: | Calorimeter Measurement of radioactivity Thermal power Temperature-controlled system |
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