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Collisional frequency shifts in 133Cs fountain clocks | P J Leo
; P S Julienne
; F H Mies
; C J Williams
; | Date: |
23 Apr 2001 | Journal: | Phys Rev Lett, 86 (17), 3743-6 | Abstract: | We present a theoretical analysis of the density dependent frequency shift in Cs fountain clocks using the highly constrained binary collision model described by Leo et al. [Phys. Rev. Lett. 85, 2721 (2000)]. We predict a reversal in the clock shift at temperatures near 0.08 microK. Our results show that s waves dominate the collision process. However, as a consequence of the large scattering lengths in Cs the clock shift is strongly temperature dependent and does not reach a constant Wigner-law value until temperatures are less than 0.1 nK. | Source: | PubMed, pmid11329313 | Services: | Forum | Review | Favorites |
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