Stochastic ExB diffusion of ions in a spatially periodical potential field

This paper discusses stochastic E x B ion motion in the homogeneous magneti c field and in the spatially periodical electrostatic potential. This appro ach is used for the simulation of ion diffusion in potential fluctuations o f boundary tokamak plasma. The presented results show that for sufficiently large amplitudes of the potential, the intrinsic stochasticity regime of i on motion appears, and this results in the spatial diffusion of particles. Scaling of diffusion on potential amplitudes, magnetic field intensity and ion mass are presented. Further possible applications are mentioned.