Measurement of Plank Constant h and the Developments on Quantum Mass Standard
HAN Bing1,2, HE Qing1, LI Shi-song3, ZHANG Zhong-hua1, LI Zheng-kun1, LI Chen3
1. National Institute of Metrology, Beijing 100013, China;
2. College of Quality and Supervisor technology, Hebei University, Baoding, Hebei 071002, China;
3. Tsinghua University, Beijing 100084, China
Abstract:Redefinition of the International System of Units(SI)on basis of fundamental physical constants is topical issues,drawing their attentions of researchers in metrology all over the world. All kinds of electromechanical balances were used to measure the Plancks constant,including ampere balance,voltage balance,superconducting magnetic levitation project,watt balance and joule balance. Once precisely measuring the Plancks constant,it would be possible to eliminate the last artifact unit,kilogram,and realize a kind of novel quantum mass standard. The principle,apparatus and recent progress of different electromechanical balances are reviewed in details. The tendencies for measuring the Plancks constant and the future of quantum mass standard have also been predicted.
韩冰, 贺青, 李世松, 张钟华, 李正坤, 李辰. 普朗克常数h测定与质量量子基准的最新研究进展[J]. 计量学报, 2013, 34(1): 90-96.
HAN Bing,HE Qing, LI Shi-song, ZHANG Zhong-hua, LI Zheng-kun, LI Chen. Measurement of Plank Constant h and the Developments on Quantum Mass Standard. Acta Metrologica Sinica, 2013, 34(1): 90-96.
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