MHD modes near the X-line of a magnetic configuration
The propagation of shear-Alfvén waves in an incompressible plasma is considered in the vicinity of an X-line of the magnetic field. A small dissipation leads to a discrete spectrum of weakly damped MHD modes with a dissipative layer in the vicinity of the separatrices. Finite amplitude perturbations imposed from the boundaries and propagating perpendicular to a separatrix are then considered and the characteristic timescale of their evolution is derived.
Bibliographic Reference: Report: JET-P(89)52 EN (1989)
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
Record Number: 199010655 / Last updated on: 1994-12-01
Original language: en
Available languages: en