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Abstract

The energy confinement improvement in H-modes that are characterised by positive radial electric fields in the plasma edge is as good as that of the more usual negative field H-modes. The improvement in particle confinement of main plasma and impurity ions together is, however, smaller in the former. Detailed measurements are given of the edge electric field, the electron density and temperature, and the electrostatic fluctuation level. During the H-mode an instability can grow that strongly affects the plasma profiles without impairing H-mode behaviour.

Additional information

Authors: VAN NIEUWENHOVE R ET AL., Ecole Royale Militaire, Bruxelles (BE);BOEDO J, University of California, Institute for Plasma and Fusion Research, Los Angeles (US);GRAY D S, University of California, Institute for Plasma and Fusion Research, Los Angeles (US);BORA D ET AL., Institut für Plasmaphysik, KFA Jülich GmbH, Jülich (DE);IVANOV R S, USSR Academy of Sciences, Institute for High Temperatures, Moscow (SU)
Bibliographic Reference: Article: 18th European Conference on Controlled Fusion and Plasma Physics, Vol. 1 (1991) pp. 405-408
Record Number: 199111493 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en