Charge States of Ions, Accelerated by a Turbulent Shock Waves

Diffisive-shock acceleration of ions is discussed. The shock wave dynamics is taken from the simulation of the coronal mass ejection event of April, 21, 2002. A self-consistent model is used for the turbulence generated by upstreaming accelerated protons. The acceleration of ions at different charge states is studied. Because of the ion cyclotron frequency dependence on the charge state, the resonance condition for ions occurs at different wavelength of the turbulence spectrum, for a given ion energy. That is why the acceleration efficiency depends on the ion electric charge.