Diffusion of stochastic magnetic field lines in a confined plasma using the generalized mapping

Abstract

The evolution of stochastic magnetic field lines has been studied numerically. Also, we have studied the transition from partial stochasticity to global stochasticity of magnetic field lines. We have developed the analytical calculations of diffusion coefficient of magnetic field lines through magnetic surfaces using the Fourier paths technique. The magnetic field lines are described by the generalized mapping. A comparison between our analytical and numerical calculations has been done.