铯原子喷泉频标的相对论频移

Relativistic Frequency Shifts in a Cesium Fountain Frequency Standard

详细分析了铯原子喷泉频标的相对论频移机制，其中包括频标内部的二级多普勒频移和重力频移，以及与频标位置有关的重力领移。导出了频移的计算公式，估算了频移的大小并讨论了它们对铯原子喷泉频标准确度的影响。

Frequency shifts due to relativistic effects in a laser cooled cesium fountain frequencystandard. i. e. second-order Doppler shift and gravitational shift. are investigated in detail. with the formulas for evaluation presented. The result shows that for laser cooled ceslum source, the second-Order Doppler shift and gravitational shift inside a casium fountain frequency standard are of the order of 10-17 under typical conditions for operation,thus negligible compared with other shifts. But the gravitational shift associated with theelevation or the gravitational potential of the standard is of the order of 10-13 for H= 1000m and should be corrected when the frequency of the standard is compared with otherprimary frequency standard, or when the standard is used for TAI Computation. The elevation uncertainty of im produces a fractional frequency shift of about 10-16.