Particle and heat transport in a partially stochastic magnetic field

Abstract

Particle and heat transport in a low collisional plasma confined by a partially stochastic magnetic field are analysed. We show that the particle diffusion is ambipolar. Moreover near stochastic threshold, the electron heat diffusivity χ e is enhanced, so that the electron and ion heat diffusivity are equal χ e= χ i∼ D√ m i/ m e ( χ i is the ion thermal diffusivity and D the particle diffusion coefficient of both species).