Linear collisionless dynamics of the GAM with kinetic electrons: comparison simulations/theory

Dynamique linéaire sans collisions des GAMs avec électrons cinétiques: comparaison simulations/théorie

V. Grandgirard (1) , X. Garbet (1) , Ch. Ehrlacher (1) , Y. Asahi (2) , E. Cashera (1) , Guilhem Dif-Pradalier (1) , P. Peter Donnel (1) , Ph. Ghendrih (1) , G. Latu (1) , Ch. Passeron (1) , Y. Sarazin (1) , D. Zarzoso (3)

1 IRFM - Institut de Recherche sur la Fusion par confinement Magnétique
2 QST - National Institutes for Quantum and Radiological Science and Technology
3 PIIM - Physique des interactions ioniques et moléculaires

This paper presents first comparisons of numerical gyrokinetic simulations with analytical theory to take into account the role of kinetic electrons in the damping rate of Geodesic Accoustic Modes (GAMs).

Keywords: kinetic electrons; Geodesic Accoustic Mode (GAM); plasma turbulence; gyrokinetic simulations

Domains: Physics [physics]; Mathematical Physics [math-ph]

V. Grandgirard, X. Garbet, Ch. Ehrlacher, Y. Asahi, E. Cashera, et al.. Linear collisionless dynamics of the GAM with kinetic electrons: comparison simulations/theory. 2018. ⟨cea-01913153⟩