Local particle and heat transport coefficients have been measured in a temperature scan of neutral-beamheated plasmas with n, Ip, and Bcphi held constant. The electron transport is ascertained from a flux analysis of a small density perturbation, and the heat transport is obtained from the equilibrium power balance. The transport coefficients vary as Te, where =1.52.5. The observed temperature dependence is predicted by numerical calculations of anomalous transport due to trapped-particle drift-type microinstabilities.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)