Edge turbulent structures are commonly observed in fusion devices and are generally believed to be responsible for confinement degradation. Among their origin drift-Alfvén turbulence is one of the most commonly suggested. The drift-Alfvén paradigm allows the existence of localized vortex-like structures observed also in various systems. Here we present the evidence of the presence of drift-Alfvén vortices in the edge region of RFX-mod reversed field pinch device, showing how these structures are responsible for electromagnetic turbulence at the edge and its intermittent nature.
Drift-Alfvén vortex structures in the edge region of a fusion relevant plasma
Vianello N;Spolaore M;Martines E;Serianni G;Zuin M;Antoni V
2010
Abstract
Edge turbulent structures are commonly observed in fusion devices and are generally believed to be responsible for confinement degradation. Among their origin drift-Alfvén turbulence is one of the most commonly suggested. The drift-Alfvén paradigm allows the existence of localized vortex-like structures observed also in various systems. Here we present the evidence of the presence of drift-Alfvén vortices in the edge region of RFX-mod reversed field pinch device, showing how these structures are responsible for electromagnetic turbulence at the edge and its intermittent nature.File in questo prodotto:
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