OHMS LAW FOR PLASMAS IN REVERSED HELD PINCH CONFIGURATION

An analytical relationship between current density and applied electri c field in reversed field pinch (RFP) plasmas has been derived in the framework of the kinetic dynamo theory, that is assuming a radial fiel d-aligned momentum transport caused by the magnetic field stochasticit y. This Ohm's law yields current density profiles with a poloidal curr ent density at the edge which can sustain the magnetic field configura tion against resistive diffusion. The dependence of the loop voltage o n plasma current and other plasma parameters for RFP experiments has b een obtained. The results of the theoretical work have been compared w ith experimental data from the RFX experiment, and a good agreement ha s been found.