Microwave leakage-induced frequency shifts in the primary frequency Standards NIST-F1 and IEN-CSF1
- 26 December 2006
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
- Vol. 53 (12) , 2376-2385
- https://doi.org/10.1109/tuffc.2006.186
Abstract
In atomic fountain primary frequency standards, the atoms ideally are subjected to microwave fields resonant with the ground-state, hyperfine splitting only during the two pulses of Ramsey's separated oscillatory field measurement scheme. As a practical matter, however, stray microwave fields can be present that shift the frequency of the central Ramsey fringe and, therefore, adversely affect the accuracy of the standard. We investigate these uncontrolled stray fields here and show that the frequency errors can be measured, and indeed even the location within the standard determined by the behavior of the measured frequency with respect to microwave power in the Ramsey cavity. Experimental results that agree with the theory are presented as wellKeywords
This publication has 12 references indexed in Scilit:
- On the power dependence of extraneous microwave fields in atomic frequency standardsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2006
- A new microwave synthesis chain for the primary frequency standard NIST-F1Published by Institute of Electrical and Electronics Engineers (IEEE) ,2006
- Power dependence of distributed cavity phase-induced frequency biases in atomic fountain frequency standardsIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2005
- Evaluation of the primary frequency standard NPL-CsF1Metrologia, 2005
- IEN-CsF1 accuracy evaluation and two-way frequency comparisonIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2004
- Accuracy evaluation of NIST-F1Metrologia, 2002
- Accuracy evaluation of the primary frequency standard NIST-7Metrologia, 2001
- Uncertainty evaluation of the atomic caesium fountain CSF1 of the PTBMetrologia, 2001
- Frequency shifts in cesium beam clocks induced by microwave leakagesIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 1998
- Solution of the Schrödinger Equation with a Hamiltonian Periodic in TimePhysical Review B, 1965