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A Comparison of Cs Fountain Primary Frequency Standards



Thomas E. Parker


There are currently 9 cesium fountain primary frequency standards reporting calibrations of TAI to the Bureau International des Poids et Measures (BIPM).  An investigation has been carried out using data from the BIPM publication Circular T to evaluate the frequency offsets among these standards and to determine if these offsets are consistent with the stated uncertainties.  The results of this investigation show that, overall, the standards are in very good agreement with each other.
Proceedings Title
Proc. EFTF Conf.
Conference Dates
April 23-25, 2008
Conference Location
Toulouse, FR


primary frequency standard, cesium, fountain


Parker, T. (2008), A Comparison of Cs Fountain Primary Frequency Standards, Proc. EFTF Conf., Toulouse, FR, [online], (Accessed March 4, 2024)
Created April 23, 2008, Updated February 17, 2017