Drift-Alfven vortex structures in the edge region of a fusion relevant plasma

Details Drift-Alfven vortex structures in the edge region of a fusion relevant plasma Drift-Alfven vortex structures in the edge region of a fusion relevant plasma

2009-04-30

arxiv.org/abs/0904.4831v2

Physics

Plasma Physics

4 pages, 5 figures, Revised version submitted for publication to Physical Review Letters

Scientific paper

Edge turbulent structures are commonly observed in fusion devices and are generally believed to be responsible for confinement degradation. Among their origin Drift-Alfven turbulence is one of the most commonly suggested. Drift-Alfven paradigm allows the existence of localized vortex-like structures observed also in various systems. Here we present the evidence of the presence of drift-Alfv\'en vortices in the edge region of RFX-Mod RFP device, showing how these structures are responsible for electromagnetic turbulence at the edge and its intermittent nature.

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