Excitation of Alfvén-like modes by large resonant magnetic perturbations in ohmic discharges

O. Zimmermann, P. Buratti, A. Krämer-Flecken, H.R. Koslowski, Y. Liang, S.D. Pinches, S.E. Sharapov

Research output: Contribution to conferencePaper

Abstract

Alfvénic modes, as determined by their frequency scaling, have been detected in ohmic discharges at TEXTOR [1][2] and FTU [3]. Recently they have also been observed in limiter plasmas at JET. They appear in the presence of large 2/1 tearing modes or strong resonant magnetic perturbations. Their drive by thermal ions distinguishes them from other Alfvénic modes, such as Toroidal Alfvén Eigenmodes (TAE). A consistent cross-machine scaling indicates a robust frequency dependence on plasma parameters.
Original languageEnglish
Publication statusPublished - 2007
Externally publishedYes
Event34th European Physical Society Conference on Plasma Physics 2007, EPS 2007 - , Poland
Duration: 1 Jan 2007 → …

Conference

Conference34th European Physical Society Conference on Plasma Physics 2007, EPS 2007
CountryPoland
Period1/1/07 → …

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Zimmermann, O., Buratti, P., Krämer-Flecken, A., Koslowski, H. R., Liang, Y., Pinches, S. D., & Sharapov, S. E. (2007). Excitation of Alfvén-like modes by large resonant magnetic perturbations in ohmic discharges. Paper presented at 34th European Physical Society Conference on Plasma Physics 2007, EPS 2007, Poland.