Resistive instabilities in plasma

Details Resistive instabilities in plasma Resistive instabilities in plasma

Sep 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ap%26ss.114...15s&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 114, no. 1, Sept. 1985, p. 15-22.

Astronomy and Astrophysics

Astrophysics

3

Gravitational Fields, Magnetic Storms, Magnetohydrodynamic Stability, Solar Flares, Fusion, Incompressible Fluids, Inviscid Flow, Stratified Flow

Scientific paper

Instabilities produced by finite-resistivity effects in a plasma are of great interest in connection with research in fusion devices, solar flares, and geomagnetic substorms. The physical mechanism of this instability are elucidated, and in particular, the tendencies in the system towards the instability and the tendencies opposing it, if any, are identified. As an illustration, the example of the so-called gravitational interchange mode, wherein a plasma with a statically stable vertical density gradient is situated in a vertical gravitational field and a sheared horizontal magnetic field is considered. The physical picture developed here may be useful in sorting out phenomena that appear when more subtle properties of the resistive modes in a plasma are considered.

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