| GENERAL |
|
|
|
|
Progress of the Inertial Mass Measurement Project at NIM |
| Zhuang Fu1,2,3**, Zhong-Hua Zhang2,3, Zheng-Kun Li2,3, Wei Zhao1, Lu-Shuai Qian1,2,3, Shi-Song Li1** |
1Department of Electrical Engineering, Tsinghua University, Beijing 100084
2Electromagnetism Division of National Institute of Metrology, National Institute of Metrology (NIM), Beijing 100029
3Key Laboratory for the Electrical Quantum Standard of AQSIQ, National Institute of Metrology (NIM), Beijing 100029
|
|
| Cite this article: |
|
Zhuang Fu, Zhong-Hua Zhang, Zheng-Kun Li et al 2017 Chin. Phys. Lett. 34 080601 |
|
|
|
|
Abstract An experiment is proposed to precisely measure the Planck constant. In this experiment, the Planck constant is measured based on the inertial mass measurement rather than the gravitational mass determinations in some other well-known experiments, e.g., the Kibble balance and counting atoms. We link the mechanical force to a quantum-traceable electrostatic force by a beam balance oscillator. After a 5-year continuous effort, the principle of the proposal is verified by a preliminary measurement with a relative uncertainty of $5.4\times 10^{-5}$. The proposal has the potential to achieve much higher measurement accuracy with further improvements.
|
|
|
Received: 17 April 2017
Published: 22 July 2017
|
|
| PACS: |
06.20.Jr
|
(Determination of fundamental constants)
|
| |
06.30.Dr
|
(Mass and density)
|
| |
06.30.Ka
|
(Basic electromagnetic quantities)
|
|
|
| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 51477160 and 91536224, and the National Key Research and Development Program of China under Grant No 2016YFF0200102. |
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
