| Author(s): |
Thomas E. Parker; Steven R. Jefferts; Thomas P. Heavner; |
| Title: |
Medium-Term Frequency Stability of Hydrogen Masers as Measured by a Cesium Fountain |
| Published: |
June 02, 2010 |
| 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: |
Proc. 2010 IEEE Intl. Freq. Cont. Symp. |
| Pages: |
pp. 318 - 323 |
| Location: |
Newport Beach, CA |
| Dates: |
June 1-4, 2010 |
| Keywords: |
atomic frequency standards;cesium fountain;hydrogen maser |
| Research Areas: |
Physics, Time and Frequency |
| PDF version: |
 Click here to retrieve PDF version of paper (458KB) |
