On the two-fluid modification of the resistive tearing instability

N. Bian, G. Vekstein

doi:10.1063/1.2759893

On the two-fluid modification of the resistive tearing instability

DOI PDF 被引用文献3件

N. Bian

The University of Manchester School of Physics and Astronomy, , Manchester M60 1QD, United Kingdom
G. Vekstein

The University of Manchester School of Physics and Astronomy, , Manchester M60 1QD, United Kingdom

抄録

<jats:p>We consider the two-fluid resistive tearing mode for an inviscid highly conducting (a large Lundquist number S) plasma in a sheared force-free magnetic field. It is shown that under the “constant-ψ” approximation there are four possible instability regimes, each of which corresponds to the specific domain in the parameter space (β,di). Here, β is a standard plasma thermal pressure parameter, while di≡c∕(ωpil) is the normalized ion inertial skin depth, with l being the shear length of the magnetic field. A qualitative analysis emphasizing when and why the transitions from one regime to another occur is also provided.</jats:p>