On the relationship between residual zonal flows and bump-on tail saturated instabilities.

Joint Varenna-Lausanne International Workshop on the Theory of Fusion Plasmas 2016

Garbet, X.^1 ; Donnel, P.^1 ; Ehrlacher, C.^1 ; Caschera, E.^1 ; Dumont, R.^1 ; Faganello, M.^2 ; Grandgirard, V.^1 ; Ghendrih, P.^1 ; Idouakass, M.^2 ; Lesur, M.^3 ; Sarazin, Y.^1 ; Zarzoso, D.^2

CEA, IRFM, St.Paul-lez-Durance Cedex

F-13108, France^1

Aix-Marseille Université, CNRS, PIIM UMR 7345, Marseille, France^2

IJL, UMR 7198 CNRS, Université de Lorraine, Vandoeuvre-lés-Nancy

54500, France^3

关键词: Bump on tail;    Classical problems;    Collisionless regime;    Finite amplitude;    Non linear;    Zonal flows;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/775/1/012004/pdf
DOI  :  10.1088/1742-6596/775/1/012004

来源: IOP

【 摘 要 】

A connection is established between two classical problems: the non linear saturation of a bump-on tail instability in collisionless regime, and the decay of a zonal flow towards a finite amplitude residual. Reasons for this connection are given and commented.