Progress of the Inertial Mass Measurement Project at NIM

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...

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Bibliographic Details
Published inChinese physics letters Vol. 34; no. 8; pp. 33 - 36
Main Author 傅壮 张钟华 李正坤 赵伟 钱璐帅 李世松
Format Journal Article
LanguageEnglish
Published 01.07.2017
Subjects
NIM
不确定性
惯性质量
普朗克常数
测量精度
测量项目
精确测量
质量检测
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ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/34/8/080601

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Summary: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 5.4×10^-5. The proposal has the potential to achieve much higher measurement accuracy with further improvements.
Bibliography:11-1959/O4
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 5.4×10^-5. The proposal has the potential to achieve much higher measurement accuracy with further improvements.
Zhuang Fu1,2,3, Zhong-Hua Zhang2,3, Zheng-Kun Li2,3, Wei Zhao1, Lu-Shuai Qian1,2,3, Shi-Song Li1（1.Department of Electrical Engineering, Tsinghua University, Beijing 100084;2.Electromagnetism Division of National Institute of Metrology, National Institute of Metrology （NIM）, Beijing 100029;3.Key Laboratory for the Electrical Quantum Standard of AQSIQ, National Institute of Metrology （NIM）, Beijing 100029）
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/34/8/080601