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Abstract

A qualitative model is proposed for the mechanism of the relaxations in the central part of Tokamak plasmas. Magnetohydrodynamic kink motion is the driver of the whole process, but its triggering and its full development are permitted by some associated specific turbulence. When the symmetry is sufficiently broken by the helical deformation, a strong burst of that turbulence produces the collapse of the density and temperature profiles and flattens the current density profile in some annular domain. The process then terminates by a return of the kink deformation.

Additional information

Authors: ANDREOLETTI J CEA, DEPARTEMENT DE RECHERCHES SUR LA FUSION CONTROLEE, SAINT-PAUL-LEZ-DURANCE (FR), CEA, DEPARTEMENT DE RECHERCHES SUR LA FUSION CONTROLEE, SAINT-PAUL-LEZ-DURANCE (FR)
Bibliographic Reference: PAPER PRESENTED: TURBULENCE AND NON-LINEAR DYNAMICS IN MAGNETOHYDRODYNAMIC FLOWS, CARGESE, JULY 4-9, 1988 AVAILABLE FROM COMMISSION OF THE EUROPEAN COMMUNITIES, DG XIII-C-3, L-2920 LUXEMBOURG AS PAPER EN 34035 ORA
Availability: Can be ordered online
Record Number: 1989128009100 / Last updated on: 1990-11-09
Category: PUBLICATION
Available languages: en