Chernyak O. Transport of magnetized particles in a random electric field

The charged particles transport across a constant magnetic field under the action of a random electric field is studied. The original method has been developed to describe the transport of particles in a wide range of correlation times of external random fields, that accounts particle trapping effects. Asymptotic diffusion coefficient, that is found on the basis of this method, demonstrates the transition from the quasilinear regime for small correlation times to the percolation regime for large ones, and in the limit of infinite correlation time the asymptotic diffusion coefficient vanishes to zero. This method is generalized to take into account the effects of a finite Larmor radius. It is shown that the intensity of diffusion depends on the Larmor radius on a small and large time scale in different ways. The consistency of analytical calculations with the results of direct numerical simulation is obtained. The developed method is more effective and easier to use than previously known methods. It is also shown that wave phases jumps considerably increase the intensity of heating of both resonant and non-resonant particles.