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

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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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
JournalPhysical Review Letters
Publication date2011
Volume106
Issue12
Pages125002
ISSN0031-9007
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 9

Keywords

  • Fusion energy
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