STOCHASTIC ACCELERATION OF CHARGED PARTICLES

Comparison of two schemes of stochastic acceleration of charged particles is carried out: at interacting with the field of wave with randomly changed phase and with the field of regular wave in the conditions of overlapping of non-linear resonances. In the absence of conditions of the resonances overlapping the spectral regions of random field which most effectively transfer their energy to particles are found. In all investigated cases, the presence of overlapping non-linear resonances led to more efficient schemes of stochastic acceleration and heating of particles in comparison with schemes involving random fields.