Laser radiation field control of the divergence of an atomic beam channeled in a polycapillary

The condition of minimal divergence of an atomic beam in a polycapillary system under conditions of laser radiation input into the polycapillary wall is considered. The effect of errors in the microcapillary size on atomic beam divergence is studied. The microcapillary radius ensuring minimal divergence of the atomic beam is optimized with allowance for the quantum character of atomic motion.