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.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
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), -. . https://doi.org/10.1103/PhysRevLett.106.125002