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Updated: Mar 29, 2026

Magnetically Induced Rotating Rayleigh-Taylor Instability
Published on: March 3, 2017
Self-Organized Stationary States of Tokamaks
S C Jardin1, N Ferraro2, I Krebs1,3
1Princeton Plasma Physics Laboratory, P.O.Box 451, Princeton, New Jersey 08543, USA.
Abstract:
We demonstrate that in a 3D resistive magnetohydrodynamic simulation, for some parameters it is possible to form a stationary state in a tokamak where a saturated interchange mode in the center of the discharge drives a near helical flow pattern that acts to nonlinearly sustain the configuration by adjusting the central loop voltage through a dynamo action. This could explain the physical mechanism for maintaining stationary nonsawtoothing "hybrid" discharges, often referred to as "flux pumping."
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