• DocumentCode
    909801
  • Title

    Frequency comparison of five commercial cesium standards with a NASA experimental hydrogen maser

  • Author

    Chi, A.R. ; Major, F.G. ; Lavery, J.E.

  • Volume
    58
  • Issue
    1
  • fYear
    1970
  • Firstpage
    142
  • Lastpage
    143
  • Abstract
    Recent long-term phase comparisons between five commercial cesium beam frequency standards and a NASA experimental hydrogen maser, NX-1, have yielded a value for the frequency of the hydrogen maser of 1 420 405 751.7767±0.0024 hertz which is 6.77×10-12±1.66 lower than that given by Vessot et al. in 1966.
  • Keywords
    Atomic measurements; Frequency measurement; Frequency synthesizers; Hydrogen; Laboratories; Magnetic field measurement; Masers; Measurement standards; NASA; Stability;
  • fLanguage
    English
  • Journal_Title
    Proceedings of the IEEE
  • Publisher
    ieee
  • ISSN
    0018-9219
  • Type

    jour

  • DOI
    10.1109/PROC.1970.7554
  • Filename
    1449484
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=909801