  The effect of radiation polarization attended with the motion of spinning
charge in the magnetic field could be viewed through the classical theory of
self-interaction. The quantum expression for the polarization time follows from
the semiclassical relation $T_{QED}\sim \hbar c^{3}/\mu_{B}^2\omega_{c}^3$, and
needs quantum explanation neither for the orbit nor for the spin motion. In our
approach the polarization emerges as a result of natural selection in the
ensenmble of elastically scattered electrons among which the group of particles
that bear their spins in the 'right' directions has the smaller probability of
radiation. The evidence of non-complete polarization degree is also obtained.
