Limiter stabilization of high-beta external kink-tearing modes

Journal Article · Sat Dec 01 00:00:00 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), Vol. 27:12
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
HIGH-BETA PLASMA
KINK INSTABILITY
STABILIZATION
TEARING INSTABILITY
TOKAMAK DEVICES
LIMITERS
INHIBITION
INSTABILITY GROWTH RATES
NUMERICAL ANALYSIS
OPTIMIZATION
PLASMA PRESSURE
CLOSED PLASMA DEVICES
INSTABILITY
MATHEMATICS
PLASMA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
THERMONUCLEAR DEVICES
700107* - Fusion Energy- Plasma Research- Instabilities