Uncertainty evaluation of the caesium fountain clock PTB-CSF2

@inproceedings{Gerginov2010UncertaintyEO,
  title={Uncertainty evaluation of the caesium fountain clock PTB-CSF2},
  author={Vladislav Gerginov and Nils Nemitz and Stefan Weyers and Rob Schroder and D. Griebsch and Robert Wynands},
  year={2010}
}
The uncertainty evaluation of CSF2, the second caesium fountain primary frequency standard at PTB, is presented. The fountain uses optical molasses to cool atoms down to 0.6μK. The atoms are launched vertically in a moving optical molasses, and state-selected in the |F = 3,mF = 0〉 hyperfine ground state. During their ballistic flight, the atoms interact twice with a microwave field, thus completing the Ramsey interaction. With a launch height of 36.5 cm above the cavity center, the central… CONTINUE READING

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