Alfvénic modes, as determined by their frequency scaling, have been detected in ohmic discharges at TEXTOR  and FTU . 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.
|Publication status||Published - 2007|
|Event||34th European Physical Society Conference on Plasma Physics 2007, EPS 2007 - , Poland|
Duration: 1 Jan 2007 → …
|Conference||34th European Physical Society Conference on Plasma Physics 2007, EPS 2007|
|Period||1/1/07 → …|
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
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.