| 低能β活度微量热计性能研究 |
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| 引用本文： | 李玮,陈细林,袁大庆,汪建清,刁立军,姚顺和. 低能β活度微量热计性能研究[J]. 原子能科学技术, 2008, 42(2): 107-111. DOI: 10.7538/yzk.2008.42.02.0107 |
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| 作者姓名： | 李玮 陈细林 袁大庆 汪建清 刁立军 姚顺和 |
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| 作者单位： | 中国原子能科学研究院 ;计量测试部，北京 ;102413 |
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| 摘 要： | 研制了10μW级放射性活度微量热计绝对测量装置。进行了等温双杯量热计计体设计和最佳半导体热电偶数目的理论计算及热电偶噪声水平估算，编写了微量热计数据获取和数据处理软件，进行了电热校准实验。对该装置的校准结果表明，在输入15μW电功率条件下，校准不确定度在2%以内。
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| 关 键 词： | 等温双杯量热计 半导体热电偶 电校准 |
| 文章编号： | 1000-6931(2008)02-0107-05 |
| 收稿时间： | 2007-04-26 |
| 修稿时间： | 2007-04-26 |
Research on Performance of Microcalorimeter for Radioactivity Measurement of Low-Energy Beta Emitters |
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| LI Wei,CHEN Xi-lin,YUAN Da-qing,WANG Jian-qing,DIAO Li-jun,YAO Shun-he. Research on Performance of Microcalorimeter for Radioactivity Measurement of Low-Energy Beta Emitters[J]. Atomic Energy Science and Technology, 2008, 42(2): 107-111. DOI: 10.7538/yzk.2008.42.02.0107 |
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| Authors: | LI Wei CHEN Xi-lin YUAN Da-qing WANG Jian-qing DIAO Li-jun YAO Shun-he |
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| Affiliation: | China Institute of Atomic Energy, P.O. Box 275-20, Beijing 102413, China |
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| Abstract: | A microcalorimeter used for radioactivity measuring of nuclides with pure β-emission was developed, and the dual-compensated isothermal microcalorimeter was designed. The best number of thermocouples was calculated. The data acquisition and processing software were programmed. The thermal power calibration for the equipment was carried out for designed and developed microcalorimeter. The uncertainty of calibration at 15 μW of input thermal power is within 2% for this microcalorimeter. |
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| Keywords: | microcalorimeter thermocouple calibration |
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