Cancellation of the collisional frequency shift in caesium fountain clocks
Preprint
- 12 December 2006
Abstract
We have observed that the collisional frequency shift in primary caesium fountain clocks varies with the clock state population composition and, in particular, is zero for a given fraction of the |F = 4, mF = 0> atoms, depending on the initial cloud parameters. We present a theoretical model explaining our observations. The possibility of the collisional shift cancellation implies an improvement in the performance of caesium fountain standards and a simplification in their operation. Our results also have implications for test operation of fountains at multiple pi/2 pulse areas.Keywords
All Related Versions
- Version 1, 2006-12-12, ArXiv
- Published version: , 6673, 66730A.
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