On the energetics of slow magnetic tearing

Details On the energetics of slow magnetic tearing On the energetics of slow magnetic tearing

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...277..841a&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 277, Feb. 15, 1984, p. 841-847.

Astronomy and Astrophysics

Astrophysics

5

Collisional Plasmas, Collisionless Plasmas, Energy Transfer, Magnetohydrodynamic Stability, Plasma Dynamics, Tearing Modes (Plasmas), Electron Distribution, High Energy Electrons, High Temperature Plasmas, Kinetic Energy, Magnetic Effects, Space Plasmas

Scientific paper

The partitioning of energy released in the linear regime of the constant-psi (slow) tearing mode for collisional, semicollisional, and collisionless plasmas has been determined. Analytic expressions for the partitioning, in terms of dimensionless parameters, are presented in a form applicable to a wide variety of plasmas. In most cases of astrophysical interest, the energy released by the instability appears primarily as kinetic energy of the ion fluid and as heat in the bulk of the electron distribution. The suprathermal tail of the electron distribution is shown not to deviate strongly from that of the initial Maxwellian. The energy gain of the tail is usually negligible in the astrophysical regime, but it is of the order of the thermal energy for laboratory plasmas.

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