Collisional frequency shifts in 133Cs fountain clocks

被引：0

作者：

Leo, PJ ^{[1
]}

Julienne, PS ^{[1
]}

Mies, FH ^{[1
]}

Williams, CJ ^{[1
]}

机构：

[1] Natl Inst Stand & Technol, Atom Phys Div, Gaithersburg, MD 20899 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.86.3743

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Wie 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 muK. OUT results show that s waves; dominate the collision process. However, as a consequence of the large scattering lengths in Ca the clock shift is strongly temperature dependent and does not reach a constant Wigner-law value until temperatures are less than 0.1 nK.

引用

页码：3743 / 3746

页数：4

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