Effect of a weak ambipolar field on non-local heat transport using the non-diffusive approximation
Abstract
We investigate the effect of a weak ambipolar field on non-local heat transport by solving the reduced Fokker-Planck equation in the non-diffusive approximation for the electron distribution function. It turns out that for a moderately high-Z plasma with steep gradients the maximum-heat-flow expression is modified and the ensuing results compare favourably with the experimental values. However, in the gentle-gradient limit the classical Spitzer-Härm heat flux expression is unaltered.
- Publication:
-
Journal of Plasma Physics
- Pub Date:
- February 1991
- DOI:
- 10.1017/S0022377800015488
- Bibcode:
- 1991JPlPh..45...51M