Abstract

Local particle and heat transport coefficients have been measured in a controlled temperature scan of neutral-beam-heated plasmas with n, I{sub p}, and B{sub {var phi}} held constant. The electron particle transport is ascertained from a general flux analysis of a small density perturbation, and the heat transport is obtained from the equilibrium power balance. The local particle and heat transport coefficients vary as T{sub e}{sup {alpha}}, where {alpha} = 1.5--2.5. The observed temperature dependence for these plasmas is predicted by numerical calculations of anomalous transport due to trapped-particle drift-type microinstabilities.

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