From current-driven to neoclassically driven tearing modes.
- Reimerdes H Centre de Recherches en Physique des Plasmas, Association EURATOM-Confédération Suisse, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland. reimerdes@fusion.gat.com
- Sauter O
- Goodman T
- Pochelon A
- 2002-03-23
Published in:
- Physical review letters. - 2002
English
In the TCV tokamak, the m/n = 2/1 island is observed in low-density discharges with central electron-cyclotron current drive. The evolution of its width has two distinct growth phases, one of which can be linked to a "conventional" tearing mode driven unstable by the current profile and the other to a neoclassical tearing mode driven by a perturbation of the bootstrap current. The TCV results provide the first clear observation of such a destabilization mechanism and reconcile the theory of conventional and neoclassical tearing modes, which differ only in the dominant driving term.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1103/PhysRevLett.88.105005
- PMID 11909366
- Persistent URL
- https://sonar.ch/global/documents/240376
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