The effective velocity distribution of atoms and the improvement of the accuracy for an optically pumped cesium beam frequency standard with sharp angle incidence of probing laser beam

Abstract

The effective velocity distribution of atoms which make contributions to the fluorescence signal in an atomic beam in an optically pumped cesium beam frequency standard with a sharp angle incidence of probing laser light has been calculated. It shows a narrow velocity distribution. With a narrow effective velocity distribution the accuracy of the evaluation of the cavity phase dependent frequency shift and second order Doppler shift can be improved.