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Necessary and sufficient stability criteria for flute modes localised at the edge of toroidal plasmas are obtained from the Braginskii's two-fluid equations without taking into account the collisional effects. It is assumed that the plasma pressure tends to vanish, but its gradient remains finite at the edge of the plasma. In this paper a review of the two-fluid modified energy principle is presented and the use of the variational method to derive the stability criteria for edge flute modes from the energy principle is described. A numerical survey of these criteria is also presented, together with the conclusions drawn from this research.

Additional information

Authors: ZHENG L-J, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE)
Bibliographic Reference: Article: Physics of Fluids B, Vol. 5 (1993) No. 5, pp. 1402-1407
Record Number: 199310958 / Last updated on: 1994-11-29
Original language: en
Available languages: en