Half-coalescence ideal magnetohydrodynamic instability of the q = 1 magnetic island in tokamaks

Journal Article · Sat Jun 01 04:00:00 EDT 1985 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.864948· OSTI ID:5746571

Lee, J K; Chu, M S; Liu, C S; Drake, J F

The ideal magnetohydrodynamic instability of a symmetric q = 1 magnetic island is studied by using an initial value method for a pressureless cylindrical tokamak plasma. It is shown that the island is unstable to a half-coalescence motion which destroys the up--down symmetry of the magnetic configuration. The mode characteristics are qualitatively similar to those predicted by Bussac et al. (Phys. Lett. 105A, 51 (1984)).

• Research Organization: GA Technologies Inc., San Diego, California 92138
• DOE Contract Number: AT03-84ER53158
• OSTI ID: 5746571
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 28:6; 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
CYLINDRICAL CONFIGURATION
EQUILIBRIUM
FLUID MECHANICS
HYDRODYNAMICS
INSTABILITY
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC ISLANDS
MAGNETOHYDRODYNAMICS
MECHANICS
PLASMA
PLASMA INSTABILITY
SIMULATION
SYMMETRY
THERMONUCLEAR DEVICES
TOKAMAK DEVICES