Turbulent relaxation patterns in SOL plasma

Autor: Varennes, R, Dif-Pradalier, G, Ghendrih, P, Grandgirard, V, Panico, O, Sarazin, Y, Serre, E, Zarzoso, D
Rok vydání: 2024
Předmět:
Druh dokumentu: Working Paper
Popis: Relaxations of localized over-density in a plane transverse to the magnetic field are numericallyinvestigated under the effect of drift-wave and interchange drives in SOL conditions. Such a controlleddeparture from thermodynamic equilibrium allows the investigation of fundamental processesat play in cross-field transport. Interchange instabilities generate ballistic outward radial flux withlow amplitude zonal flow patterns, whereas drift-wave instabilities result in symmetric radial fluxwith large amplitude zonal flow patterns. When both instabilities are considered, the combinedeffects tend to favor drift-waves, leading to a weaker outward flux with larger zonal flow patterns.
Databáze: arXiv