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Medium-Term Frequency Stability of Hydrogen Masers as Measured by a Cesium Fountain

Published

Author(s)

Thomas E. Parker, Steven R. Jefferts, Thomas P. Heavner

Abstract

Abstract Hydrogen masers are used extensively in time scale ensembles, but the frequency drift must be accurately known. NIST-F1, the cesium fountain primary frequency standard at the National Institute of Standards and Technology, now operates nearly every month and has provided an unprecedented opportunity to characterize the medium-term frequency stability (tau = 30 to 90 days) of six hydrogen masers. An unexpected observation was a moderate level of correlation in the frequency fluctuations of all the masers.
Proceedings Title
Proc. 2010 IEEE Intl. Freq. Cont. Symp.
Conference Dates
June 1-4, 2010
Conference Location
Newport Beach, CA

Keywords

atomic frequency standards, cesium fountain, hydrogen maser

Citation

Parker, T. , Jefferts, S. and Heavner, T. (2010), Medium-Term Frequency Stability of Hydrogen Masers as Measured by a Cesium Fountain, Proc. 2010 IEEE Intl. Freq. Cont. Symp., Newport Beach, CA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=906021 (Accessed April 16, 2024)
Created June 2, 2010, Updated February 19, 2017