Tearing-mode stability properties of a diffuse anisotropic field-reversed ion layer at marginal stability

Journal Article · Tue Dec 01 04:00:00 EST 1981 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.863336· OSTI ID:5948622

Chen, J; Davidson, R C

Stability properties are investigated for purely growing (Re..omega.. = 0) tearing modes at marginal stability (Im..omega.. = 0) for a rotating, nonrelativistic cylindrically symmetric ion layer immersed in an axial magnetic field. The analysis is carried out within the framework of a Vlasov-fluid model in which the electrons are described as a macroscopic cold fluid, and the layer ions are described by the Vlasov equation. Tearing-mode stability properties are calculated numerically for azimuthally symmetric perturbations about an ion layer equilibrium with temperature anisotropy. The marginal stability eigenvalue equation is solved numerically for the perturbation amplitude and the normalized axial wavenumbers at marginal stability in terms of temperature anisotropy, layer radius, and magnetic field depression on the axis. It is found that the range of unstable wavenumbers decreases as T/sub vertical-barvertical-bar//T/sub perpendicular/ is increased, and numerical estimates are made of the anisotropy required for complete stabilization.

• Research Organization: Plasma Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
• OSTI ID: 5948622
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 24:12; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700105* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Theoretical-- (-1987)
AMPLITUDES
ANISOTROPY
BOLTZMANN-VLASOV EQUATION
CHARGED PARTICLES
DIFFERENTIAL EQUATIONS
DIFFUSION
DISTURBANCES
EIGENVALUES
EQUATIONS
FLUIDS
IONS
LAYERS
MAGNETIC FIELDS
MATHEMATICS
MOTION
NUMERICAL ANALYSIS
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA
ROTATION
STABILITY
SYMMETRY