A Measurement of the Gyromagnetic Ratio of the Proton by the Strong Field Method

  • B. P. Kibble


The gyromagnetic ratio of the proton in water, γ p , is a physical constant whose value is extensively used to measure magnetic fields precisely by observing precession frequencies. By determining the value of γ p by the weak and strong field methods we can both express in SI its magnetic fields measured in this way and realise the ampere according to its SI definition with an uncertainty of about a part in a million.


Gyromagnetic Ratio National Physical Laboratory Precession Frequency Material Shape High Order Dependence 
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  1. Cohen, E R and Taylor, B N. Journal of Physical and Chemical Reference Data 2, 663–734 (1973)ADSCrossRefGoogle Scholar
  2. Kibble, B P. Metrologia 11, 1 — 5 (1975)ADSCrossRefGoogle Scholar
  3. Kibble, B P and Hunt,G J. Electrical Science Divisional Report, National Physical Laboratory. (To be published)Google Scholar
  4. Kibble, B P and Hunt, G J. National Physical Laboratory Divisional Report Qu15 (1971)Google Scholar
  5. Williams, E R and Olsen, P T. IEEE Trans. on Instrumentation and Measurement IM21 376–379 (1972)Google Scholar

Copyright information

© Springer Science+Business Media New York 1976

Authors and Affiliations

  • B. P. Kibble
    • 1
  1. 1.Division of Electrical ScienceNational Physical LaboratoryTeddingtonEngland

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