Ion acceleration in collisions of magnetoacoustic shock waves in inhomogeneous plasma

Energy distribution of particles accelerated at plasma ion interaction with a potential step simulating a range of collisions of two magnetoacoustic shock waves moving with increasing rate in heterogeneous plasma was calculated. The initial spectrum of ions was shown to be converted in a spectrum where three groups of particles accelerated under various regimes might be determined. The effect of concentration, of Mach magnetic number, of the initial conditions of the wave front formation on the intensity redistribution within the accelerated particle energy spectrum was analyzed. It was determined that in terms of the studied model in heterogeneous plasma two beams of accelerated particles moving along the magnetic field in the opposite directions might be formed. Comparison with the experiment was carried out