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Absolute frequency of an atomic hydrogen maser clockAn accurate determination was made of the unperturbed atomic hydrogen ground state hyperfine transition frequency (F=1,m=0 - F=0,m=0) in reference to present world wide realizations of internationally defined time interval. In relation to the international atomic time system, the composite value is 1,420,405,751.7755 plus or minus 0.0031 HZ.
Document ID
19720019899
Acquisition Source
Legacy CDMS
Document Type
Preprint (Draft being sent to journal)
Authors
Peters, H. E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hall, R. G. (Naval Observatory)
Percival, D. B. (Naval Observatory)
Date Acquired
September 2, 2013
Publication Date
June 1, 1972
Subject Category
Masers
Report/Patent Number
X-524-72-225
NASA-TM-X-65936
Report Number: X-524-72-225
Report Number: NASA-TM-X-65936
Accession Number
72N27549
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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