关键词: 铯束频标, Ramsey跃迁, 微波互作用系统, 频移

Abstract: Based on the exiting theory,this paper establishes a simulation model of the Ramsey transition of cesium atoms.This model can not only simulate the transition line shape that occurs in the microwave cavity under ideal conditions,but also can simulate the effects of the common phenomena in the cesium beam frequency standard,such as adjacent σ transitions,the phase difference between the two interaction regions of the microwave cavity and the C field unevenness on the transition line shape.The comparison between experimental test and simulation shows that this model can highly restore the transition line shape measured by the cesium beam frequency standard experiment and give specific parameter deviations,which has an important guiding role in the frequency shift control of the cesium beam frequency standard.

Key words: Cesium beam frequency standard, Ramsey transition, Microwave interaction system, Frequency shift