Magnetic turbulent electron transport in the reversed-field pinch

Publisher Website
Google Scholar
Abstract
A model of magnetic turbulent electron transport is presented. The model, based on test particle diffusion in a stochastic magnetic field, entails a Boltzmann description of electron dynamics in the long mean‐free‐path limit and quantitatively describes the salient features of superthermal electron measurements in the reversed‐field pinch (RFP) edge plasma. Included are predictions of the mean superthermal electron energy, current density, and distribution function asymmetry. The distribution function asymmetry leads directly to the observed power flow asymmetry in present generation RFP’s. A discussion of the transport model, the assumptions implicit in the model, a comparison of model predictions with experiment, and the relevance of this work to the general issue of magnetic turbulent transport in toroidal systems are presented.