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This paper shows that existing neoclassical transport theories in the high collisionality regime are inadequate to describe the edge plasma, where the gradient length scales are of the order of a few centimetres. Gyrostresses modify considerably the continuity energy and parallel momentum equations, and particle transport is no longer automatically ambipolar. The general relation between momentum and energy transport is discussed. The only remaining limitations of the theory are related to the wall inhomogeneities in the poloidal and/or toroidal directions.

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Authors: ROGISTER A L, Forschungszentrum Jülich GmbH (KFA) (DE)
Bibliographic Reference: Article: Phys. Plasmas, Vol. 1 (1994) No. 3, pp. 619-635
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