Ion transport barriers triggered by plasma polarization in gyrokinetic simulations - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Article Dans Une Revue Plasma Physics and Controlled Fusion Année : 2013

Ion transport barriers triggered by plasma polarization in gyrokinetic simulations

Résumé

The creation of ion transport barriers by externally induced sheared E × B flows is investigated with the global, full-f and flux-driven gyrokinetic code GYSELA. A gyrokinetic source of vorticity is designed and proves to be efficient in polarizing the plasma. Induced sheared electric fields develop in the turbulent core and are accompanied by the creation of a transport barrier. The barrier and the sheared flow relax quasi-periodically because of zonal flow activity and a destabilizing temperature anisotropy induced by the vorticity source. A new cyclic mechanism leading to the relaxation of transport barriers in tokamaks is discovered.
Fichier non déposé

Dates et versions

insu-03621009 , version 1 (27-03-2022)

Identifiants

Citer

A. Strugarek, Y. Sarazin, D. Zarzoso, J. Abiteboul, A. S. Brun, et al.. Ion transport barriers triggered by plasma polarization in gyrokinetic simulations. Plasma Physics and Controlled Fusion, 2013, 55, ⟨10.1088/0741-3335/55/7/074013⟩. ⟨insu-03621009⟩
8 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More