Stability of Alfven modes in a collisionless anisotropic plasma confined by a highly curved magnetic field

Journal Article · Tue Apr 15 04:00:00 EDT 2008 · Plasma Physics Reports

DOI:https://doi.org/10.1134/S1063780X08040028· OSTI ID:21100088

Grigor'ev, I A; Pastukhov, V P ^[1]

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1. Russian Research Centre Kurchatov Institute (Russian Federation)

The stability of Alfven modes in a collisionless plasma with an anisotropic pressure in a highly curved magnetic field is studied. A linearized equation for describing longitudinally nonuniform MHD perturbations with frequencies below the bounce frequency is derived. In this equation, the perturbations of longitudinal and transverse pressures are calculated using a collisionless kinetic equation. It is shown that longitudinal fluxes of the transverse and longitudinal plasma energies give rise to pressure perturbations different from those in the Chew-Goldberger-Low collisionless hydrodynamics. The corresponding energy principle is constructed. A stability criterion for Alfven modes is obtained and is found to be more stringent than that in the Chew-Gold-berger-Low model.

• OSTI ID: 21100088
• Journal Information: Plasma Physics Reports, Journal Name: Plasma Physics Reports Journal Issue: 4 Vol. 34; ISSN PPHREM; ISSN 1063-780X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANISOTROPY
COLLISIONLESS PLASMA
DISTURBANCES
KINETIC EQUATIONS
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
PERTURBATION THEORY
STABILITY