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| 液氦超流转变温度长期复现性研究 | |
| 引用本文： | 林鹏,喻力弘,张哲.液氦超流转变温度长期复现性研究[J].计量学报,2011,32(3):244-248. |
| 作者姓名： | 林鹏 喻力弘 张哲 |
| 作者单位： | 1.中国计量科学研究院, 北京 100013 2.中国科学院理化技术研究所, 北京 100190 |
| 摘 要： | 按照规范一致的实验方法,使用2000年充气密封的6个液氦超流转变密封瓶,前后10年的时间内在国内外4个实验室进行了液氦超流转变温度长期复现性的实验研究。其中编号为RIRT 229841的铑铁电阻温度计参加了43次液氦超流转变温度复现,获得了标准偏差为0.035 mK的复现性。 |
| 关 键 词： | 计量学 液氦 温度 固定点 复现 超流转变 |
Study on the Long Term Stability on the Superfluid Transition Temperature of Helium |
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| LIN Peng,YU Li-hong,ZHANG Zhe.Study on the Long Term Stability on the Superfluid Transition Temperature of Helium[J].Acta Metrologica Sinica,2011,32(3):244-248. | |
| Authors: | LIN Peng YU Li-hong ZHANG Zhe |
| Affiliation: | 1. National Institute of Metrology, Beijing 100013, China 2. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China |
| Abstract: | The long term stability of the superfluid transition temperature of helium has been studied in the past ten years using six cells sealed in 2000. The measurements are made in four laboratories with a regular procedure. A rhodium-iron resistance thermometer with series number of 229841 is used at forty-three measurements to realize the superfluid transition temperature of helium with the standard deviation of 0.035 mK. |
| Keywords: | Metrology Liquid helium Temperature Fixed point Realization Superfluid transition |
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