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It is shown that existing neoclassical theories in the high collisionality regime are inadequate to describe the edge plasma, where the gradient length scales are of the order of only a few centimetres. Gyrostresses usually modify considerably the continuity, energy, and parallel momentum equations. Particle transport, moreover, is no longer automatically ambipolar: the radial electric field is actually determined by the ambipolarity constraint.

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