Radiative effects in a plane wave moving along a magnetic field

Radiative effects are considered when a scalar particle interacts with the field of an intense plane wave of a general type propagating along a magnetic field. Within the framework of operator technique the mass operator of a particle is calculated. A detailed analysis in the case of a circularly polarised monochromatic wave is carried out. The behaviour of particles in the vicinity of the cyclotron resonance is analysed. (author)