Confinement and Related Transport in Extrap Geometry. Research and Training Programme on Controlled Thermonuclear Fusion and Plasma Physics (Eur-Ne)

摘要

The properties of plasma equilibrium are investigated for Extrap magnetic confinement geometry. An analytic solution for the profiles of the plasma parameters is found under the assumption that the energy is lost primarily in the radial direction by heat conduction and convection. The radial particle confinement time is estimated, showing favorable scaling with plasma density and temperature. The conventional assumption of a uniform current density is shown to be unjustified in the case of inhomogeneus electron temperature. An analytical expression is given for the pinch radius with different mechanisms of heat transport.