Equations of spin motion in an external field. I
Within the framework of single-particle theory for Dirac particles, quasiclassical equations of spin motion in a magnetic field are obtained. Various operators are considered for the description of the spin properties of the particles moving in the external field. As a specific example, the equations for the magnetic moment in a focusing field are solved. The resonance character of these equations is noted.
KeywordsMagnetic Field External Field Spin Motion Dirac Particle Resonance Character
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