Orientation Error Compensation for a system of Two Rubidium Atomic Clocks Placed in a Directionally Varying Magnetic Field

This paper considers the possibility of compensating for the orientation frequency error of a system of two small-sized rubidium atomic clocks caused by the difference between the longitudinal and transverse screening coefficients of the magnetic shield used. We present the results of orientation displacement measurements of two rubidium atomic clocks of averaged frequency, placed in an external magnetic field of 0.45 Oe, varying in direction. It is shown that with oppositely directed optical axes of the devices in the system, a significant suppression (more than 4 times) of the averaged frequency orientation shift is provided.