Distributed cavity phase frequency shifts of the caesium fountain PTB-CSF2
Atomic Physics
2018-10-22 v1 Quantum Physics
Abstract
We evaluate the frequency error from distributed cavity phase in the caesium fountain clock PTB-CSF2 at the Physikalisch-Technische Bundesanstalt with a combination of frequency measurements and ab initio calculations. The associated uncertainty is 1.3E-16, with a frequency bias of 0.4E-16. The agreement between the measurements and calculations explains the previously observed frequency shifts at elevated microwave amplitude. We also evaluate the frequency bias and uncertainty due to the microwave lensing of the atomic wavepackets. We report a total PTB-CSF2 systematic uncertainty of 4.1E-16.
Keywords
Cite
@article{arxiv.1110.2590,
title = {Distributed cavity phase frequency shifts of the caesium fountain PTB-CSF2},
author = {S. Weyers and V. Gerginov and N. Nemitz and R. Li and K. Gibble},
journal= {arXiv preprint arXiv:1110.2590},
year = {2018}
}
Comments
15 pages, 5 figures, to be published in Metrologia