Direct observation of current in type-I edge-localized-mode filaments on the ASDEX upgrade tokamak

N. Vianello, V. Naulin, R. Schrittwieser, H.W. Müller, M. Zuin, C. Ionita, J.J. Rasmussen, F. Mehlmann, V. Rohde, R. Cavazzana, M. Maraschek

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Abstract

Magnetically confined plasmas in the high confinement regime are regularly subjected to relaxation oscillations, termed edge localized modes (ELMs), leading to large transport events. Present ELM theories rely on a combined effect of edge current and the edge pressure gradients which result in intermediate mode number (n≅10-15) structures (filaments) localized in the perpendicular plane and extended along the field lines. By detailed localized measurements of the magnetic field perturbation associated to type-I ELM filaments, it is shown that these filaments carry a substantial current. © 2011 American Physical Society.
Original languageEnglish
Article number125002
Pages (from-to)-
JournalPhysical Review Letters
Volume106
Issue number12
DOIs
Publication statusPublished - 23 Mar 2011
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Vianello, N., Naulin, V., Schrittwieser, R., Müller, H. W., Zuin, M., Ionita, C., ... Maraschek, M. (2011). Direct observation of current in type-I edge-localized-mode filaments on the ASDEX upgrade tokamak. Physical Review Letters, 106(12), -. [125002]. https://doi.org/10.1103/PhysRevLett.106.125002