Finite Larmor radius stabilization of an ideal interchange mode in a high-shear helical system

Journal Article · Tue Apr 01 04:00:00 EST 1986 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.865684· OSTI ID:5919934

Wakatani, M; Sugama, H; Hasegawa, A

Finite Larmor radius (FLR) magnetohydrodynamic equations for stellarators are solved numerically to study the linear mode structure of the drift interchange mode. FLR stabilization correlates with the reduction of the phase difference between the pressure perturbation (or the magnetic perturbation) and the potential perturbation. In a cylindrical plasma model with a fixed boundary, the FLR effect, however, is found to destabilize the interchange mode in the large diamagnetic drift velocity regime.

• Research Organization: Plasma Physics Laboratory, Kyoto University, Gokasho, Uji, Japan
• DOE Contract Number: AC02-76ET53016
• OSTI ID: 5919934
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 29:4; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
CLOSED PLASMA DEVICES
CONFIGURATION
DIAMAGNETISM
DISTURBANCES
DRIFT INSTABILITY
ELECTRON DRIFT
FLUID MECHANICS
FLUTE INSTABILITY
HELICAL CONFIGURATION
HYDRODYNAMICS
INSTABILITY
LARMOR RADIUS
MAGNETISM
MAGNETOHYDRODYNAMICS
MECHANICS
NUMERICAL SOLUTION
PLASMA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA MICROINSTABILITIES
PLASMA PRESSURE
RELAXATION
SHEAR
STABILIZATION
STELLARATORS
THERMONUCLEAR DEVICES