Giant oscillations of electron temperature during steady-state operation on tore supra

F. Imbeaux, G. Giruzzi, P. Maget, J.L. Ségui, V.S. Udintsev, J.F. Artaud, D. Elbèze, G.T.A. Huysmans, E. Joffrin, D. Mazon, R. Sabot, A. Sirinelli

Research output: Contribution to journalArticleAcademicpeer-review

21 Citations (Scopus)

Abstract

During fully noninductively driven discharges in the Tore Supra tokamak, large spontaneous oscillations of the core electron temperature (ΔTe/Te>50%) have been observed for the first time. They occurred during the standard O regime, which is itself characterized by periodic oscillations of much smaller amplitude. The “giant” oscillations appear to involve distinct mechanisms with respect to the O regime and provide a spectacular example of the complex nonlinear interactions between energy confinement, noninductive current sources, and MHD that may occur in a tokamak plasma during steady-state operation.
Original languageEnglish
Article number45004
JournalPhysical Review Letters
Volume96
Issue number4
DOIs
Publication statusPublished - 1 Feb 2006
Externally publishedYes

Keywords

  • Tokamaks spherical tokamaks
  • Transport properties
  • Nonlinear phenomena: waves wave propagation and other interactions

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