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28th Annual Symposium on Frequency Control
A method has been developed which measures the velocity distribution of the atoms in a beam tube using the Ramsey dual interaction region principle. The method involves pulsing the R F excitation signal at a period related to the atoms' time-of-flight between the interactioL regions. The pulse method, with its ability to measure velocity distribution enables calculations of cavity phase shift and secondorder Doppler effect. This research has motivated the development of a system, complete untodoi:10.1109/freq.1974.200043 fatcat:eypi73enuvcbfkjsm4nsgr2oee