Abstract
We measure a cold collision frequency shift in an fountain clock that is fractionally 30 times smaller than that for Cs. The shift is for a density of . We study the cavity pulling of the atomic transition and use it to cancel the cold collision shift. We also measure the partial frequency shifts of each clock state finding .
- Received 27 March 2000
DOI:https://doi.org/10.1103/PhysRevLett.85.1622
©2000 American Physical Society