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Curvature effect on tearing modes in presence of neoclassical friction
- Source :
- Physics of Plasmas, Physics of Plasmas, American Institute of Physics, 2013, 20 (11), pp.112504. ⟨10.1063/1.4829038⟩, Physics of Plasmas, 2013, 20 (11), pp.112504. ⟨10.1063/1.4829038⟩
- Publication Year :
- 2013
- Publisher :
- HAL CCSD, 2013.
-
Abstract
- Neoclassical physics (here associated to the poloidal variation of the magnetic field strength along field lines in a tokamak) is well known for driving self-generated plasma current and nonlinear magnetic islands associated to it in high performance, ITER relevant plasma discharges. It is demonstrated that the neoclassical friction between a magnetic perturbation and plasma flow already impacts magnetic islands in the linear regime, by inducing a weakening of curvature stabilization for tearing modes. This conclusion holds in particular for regimes where convection is influencing the pressure dynamics, as shown using a simple analytical model and confirmed in full Magneto-Hydro-Dynamics simulations.
- Subjects :
- Physics
Tokamak
Condensed matter physics
Field line
Mechanics
Plasma
Condensed Matter Physics
Curvature
01 natural sciences
010305 fluids & plasmas
law.invention
Magnetic field
[PHYS.PHYS.PHYS-COMP-PH]Physics [physics]/Physics [physics]/Computational Physics [physics.comp-ph]
Physics::Plasma Physics
law
[PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph]
0103 physical sciences
Tearing
Electric current
Magnetohydrodynamics
010306 general physics
ComputingMilieux_MISCELLANEOUS
Subjects
Details
- Language :
- English
- ISSN :
- 1070664X and 10897674
- Database :
- OpenAIRE
- Journal :
- Physics of Plasmas, Physics of Plasmas, American Institute of Physics, 2013, 20 (11), pp.112504. ⟨10.1063/1.4829038⟩, Physics of Plasmas, 2013, 20 (11), pp.112504. ⟨10.1063/1.4829038⟩
- Accession number :
- edsair.doi.dedup.....4e5d8d2556ebaead9abb5c49e2bb1428
- Full Text :
- https://doi.org/10.1063/1.4829038⟩