Spin orientation of spin-1/2 particles in a uniform magnetic field

The polarization of spin-1/2 particles in a constant uniform magnetic field is investigated. In general, the quantization axis onto which the spin projection has a definite value does not coincide with the field direction. As the particle moves, the orientation of the quantization axis changes, but its projections onto the axes of the system of cylindrical coordinates remain unchanged. The direction of the spin-quantization axis does not depend on the relation between the anomalous and Dirac magnetic moments.