Limiter stabilization of high-beta external kink-tearing modes

Journal Article · Fri Nov 30 23:00:00 EST 1984 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.864600· OSTI ID:6256287

Lee, J K; Ohyabu, N

The stabilizing effects of finite-width poloidal limiters, toroidal limiters, and general mushroom limiters are examined for high-beta finite resistivity tokamak plamas in free boundary. When the plasma pressure and resistivity are small, a poloidal limiter is effective in reducing the growth rate even with a small limiter size, while a toroidal limiter requires a large size for a comparable effect. As the plasma pressure or resistivity increases, a toroidal limiter becomes more effective in reducing the growth rate than a poloidal limiter of the same size. A small optimized mushroom limiter might have a stabilizing effect similar to a conducting shell.

• Research Organization: GA Technologies Inc., San Diego, California 92138
• DOE Contract Number: AT03-84ER53158
• OSTI ID: 6256287
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 27:12; 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
HIGH-BETA PLASMA
INHIBITION
INSTABILITY
INSTABILITY GROWTH RATES
KINK INSTABILITY
LIMITERS
MATHEMATICS
NUMERICAL ANALYSIS
OPTIMIZATION
PLASMA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA PRESSURE
STABILIZATION
TEARING INSTABILITY
THERMONUCLEAR DEVICES
TOKAMAK DEVICES