Stability of force-free Taylor states in a new version of magnetic flux-averaged magnetohydrodynamics
- Max-Planck-Insitut fur Plasmaphysik, EURATOM Association, D-8046, Garching (Germany)
- Laboratory of Plasma Studies, Cornell University, Ithaca, New York 14853 (United States)
It is observed that the recently developed magnetic flux-averaged magnetohydrodynamics (AMHD) [Phys. Plasmas {bold 1}, 2488 (1994)] is incompatible with Taylor{close_quote}s theorem, which states that the lowest-energy state of force-free equilibria based on the conservation of the helicity integral is absolutely stable for vanishingly small resistivity. By a modification of the Lagrangian from which AMHD is derived, a modified version of AMHD that is compatible with Taylor{close_quote}s theorem is obtained. It also provides an energy principle for examining the linear instability of resistive equilibria, which has a great advantage over resistive MHD. {copyright} {ital 1996 American Institute of Physics.}
- DOE Contract Number:
- FG02-93ER54221
- OSTI ID:
- 253482
- Journal Information:
- Physics of Plasmas, Vol. 3, Issue 1; Other Information: PBD: Jan 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measurement of the dynamo effect in a plasma
Linear stability analysis of force-free equilibria close to Taylor relaxed states