Simulation of Particle Diffusion in Magnetic Field and Stochastic Electrostatic Field

The evolution of the transverse turbulent diffusion of charged particles is given by particle simulation. The simulated relative diffusion, first, rises rapidly as t^α (α > 3). Then it oscillates obviously and increases slowly in an average value. Finally, it tends asymptotically to the relative diffusion in a spatially uncorrelated stochastic field(white noise). The simulated results are quite different from previous analytic theorly.