Turbulent relaxation patterns in SOL plasma
Plasma Physics
2024-06-06 v1
Abstract
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.
Cite
@article{arxiv.2406.03277,
title = {Turbulent relaxation patterns in SOL plasma},
author = {R Varennes and G Dif-Pradalier and P Ghendrih and V Grandgirard and O Panico and Y Sarazin and E Serre and D Zarzoso},
journal= {arXiv preprint arXiv:2406.03277},
year = {2024}
}