Stability of helically symmetric equilibrium to ideal MHD perturbations [electronic resource].
- Princeton, N.J. : Princeton University, 1978. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: 22 : digital, PDF file
- Additional Creators:
- Princeton University and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Two-dimensional, low ..beta.. (..beta.. = plasma pressure/magnetic field pressure) plasma equilibria have been examined for stability to symmetry breaking, current driven ideal MHD perturbations. In particular, the helically symmetric equilibria which arise in two-dimensional nonlinear studies of tearing modes in cylindrical columns are shown to be unstable to perturbations which tend to reduce the numbers of islands, when the wavevector of the perturbation in the equilibrium symmetry direction is sufficiently small. However, in applying these results to a small inverse aspect ratio torus, we find that to satisfy periodicity requirements in the torus, the minimum wavevector of the perturbation along the symmetry direction of the island equilibrium is too large for instability.
- Published through SciTech Connect., 11/01/1978., "pppl-1487", and Kaw, P.K.; White, R.B.; Valeo, E.J.; Monticello, D.A.
- Funding Information:
View MARC record | catkey: 14751720