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Abstract

The aim of this paper is to discuss the dependence of the radial average particle flux across a stochastic layer in terms of the average density or pressure gradient, by assuming the transverse diffusion flux of particles to be locally proportional to the density gradient. It is shown that a strongly collisional regime is needed to obtain a particle flux proportional to the pressure gradient and therefore to achieve with an ergodic divertor a plasma mode of confinement where the density accumulates at the wall.

Additional information

Authors: CAPES H, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);SAMAIN A, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);GHENDRIH P, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);NGUYEN F, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Paper presented: 3rd International Workshop on Plasma Edge Theory in Fusion Devices, Bad Honnef (DE), June 22-24, 1992
Availability: Available from (1) as Paper EN 37254 ORA
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