Turbulent relaxation patterns in SOL plasma - Laboratoire de Physique des Plasmas (LPP)
Preprints, Working Papers, ... Year : 2024

Turbulent relaxation patterns in SOL plasma

G Dif-Pradalier
  • Function : Author
P Ghendrih
  • Function : Author
V Grandgirard
  • Function : Author
Y Sarazin
  • Function : Author
E Serre
  • Function : Author
D Zarzoso
  • Function : Author

Abstract

Relaxations of localized over-density in a plane transverse to the magnetic field are numerically investigated under the effect of drift-wave and interchange drives in SOL conditions. Such a controlled departure from thermodynamic equilibrium allows the investigation of fundamental processes at play in cross-field transport. Interchange instabilities generate ballistic outward radial flux with low amplitude zonal flow patterns, whereas drift-wave instabilities result in symmetric radial flux with large amplitude zonal flow patterns. When both instabilities are considered, the combined effects tend to favor drift-waves, leading to a weaker outward flux with larger zonal flow patterns.
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Dates and versions

hal-04599956 , version 1 (04-06-2024)

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R Varennes, G Dif-Pradalier, P Ghendrih, V Grandgirard, O Panico, et al.. Turbulent relaxation patterns in SOL plasma. 2024. ⟨hal-04599956⟩
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