RADIAL TRANSPORT IN THE ELMO BUMPY TORUS IN COLLISIONAL REGIMES

Neutral and charged-particle densities and temperatures are calculated as functions of radius for the toroidal plasma in the ELMO Bumpy Torus (EBT). Energy-dependent ionization and charge exchange rates, am bipolar diffusion, and self-consistent radial electric field profiles are included. Variations in the magnetic field due to finite toroidal plasma pressure and transport due to drift waves and magnetic field errors are neglected. When the large electric field limit of the neoclassical transport coefficients is used, results are limited to relatively cool electrons (kTe ∼ 100-200 eV) and collisional scaling for radially inward pointing electric fields. © 1979 IOP Publishing Ltd.