Magnetohydrodynamic activity during edge localized modes on ASDEX

Autor: G. Fussmann, M. Kornherr, S. von Goeler, J. Gernhardt, O. Klüber
Rok vydání: 1990
Předmět:
Zdroj: Nuclear Fusion. 30:395-404
ISSN: 1741-4326
0029-5515
DOI: 10.1088/0029-5515/30/3/001
Popis: Magnetohydrodynamic (MHD) activity during edge localized modes (ELMs) has been monitored in the ASDEX tokamak. Besides a fast inward shift of the plasma column, a helical MHD perturbation has been found to accompany ELMs. For the discharges investigated, the helical instability has a poloidal mode number m of 3 or 4 and a toroidal mode number n of 1, and it propagates in the direction of the electron diamagnetic drift. It seems to be identical with the Toi mode, which has been observed to disappear during L-H transitions.
Databáze: OpenAIRE