Energetic electron transport in the presence of magnetic perturbations in magnetically confined plasmas

Abstract

The transport of energetic electrons is sensitive to magnetic perturbations. By using 3D numerical simulation of test particle drift orbits we show that the transport of untrapped electrons through an open region with magnetic perturbations cannot be described by a diffusive process. Based on our test particle simulations, we propose a model that leads to an exponential loss of particles.Comment: Accepted for publication in Journal of Plasma Physics (Energetic Electrons special issue