Numerical Simulation on Plasma Diffusion in Three Dimensions

Abstract

Three-dimensional plasma numerical simulation on cross-field diffusion has been performed for cases with closed and nonclosed field lines of force. For the former case, the diffusion essentially takes the form found for two dimensions showing the three regions of diffusion, while for the latter, the diffusion follows the classical theory to stronger fields. However, the diffusion is always enhanced above the classical level when the magnetic field exceeds a critical value.