Theoretical studying about the measurement of the C-field intensity in the optical pumped cesium frequency standard

In the paper the measurement of the C-field intensity is analyzed theoretically in optical pumped Cesium frequency standard. The transition probability from the F=3 m_F=0 level state to the F=4 m_F=0 level state has been discussed as the function of the frequency and power of the signal injected to the low frequency coils. The result shows out the fluorescence intensity in the probing region increases to 1.37 time of the normal condition without the low frequency signal at the Ramsey cavity.