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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, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Paper presented: Turbulence and Non-linear Dynamics in Magnetohydrodynamic Flows, Cargese, July 4-9, 1988
Availability: Available from (1) as Paper EN 34035 ORA
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