Contribution of magnetic field lines stochasticity into anomalous transport in a tokamak

Abstract

The stochastic magnetic field lines behavior has been studied. We have developed a numerical technique in order to study their transition from partial to global stochasticity. Also, we have introduced a diffusion coefficient model (D_s) for to simulate the magnetic field lines diffusion though magnetic surfaces. The non-Gaussian dynamics of the field lines has been analyzed by calculating the kurtosis parameter.