Effects of diamagnetic drift and compressibility on linear resistive magnetohydrodynamic stability of stellarators

Journal Article · Sun Aug 01 00:00:00 EDT 1993 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860685· OSTI ID:6170977

Charlton, L A; Leboeuf, J ^[1]

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1. Oak Ridge National Laboratory, P.O. Box 2009, Oak Ridge, Tennessee 37831 (United States)

To study diamagnetic and compressibility effects for stellarators, toroidally averaged equations describing resistive pressure-driven modes are developed. Linear stability results are given for cylindrical geometry and toroidal geometry. When toroidal coupling is included, both the analytical theory and numerical calculations show that diamagnetic effects can be destabilizing when they are small. However, for parameters appropriate to the Advanced Toroidal Facility (ATF) experimental device [J. F. Lyon [ital et] [ital al]., Fusion Technol. [bold 10], 179 (1986)] the diamagnetic effects are large and stabilizing. The linear results also show that for the specific cases reported here compressibility effects tend to cancel toroidal effects. Cylindrical calculations which include diamagnetic effects may then be adequate for the study of the experimental data.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6170977
• Journal Information: Physics of Fluids B; (United States), Vol. 5:8; ISSN 0899-8221
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
STELLARATORS
STABILITY
COMPRESSIBILITY
CYLINDRICAL CONFIGURATION
DIAMAGNETISM
MAGNETOHYDRODYNAMICS
PRESSURE DEPENDENCE
TOROIDAL CONFIGURATION
ANNULAR SPACE
CLOSED CONFIGURATIONS
CLOSED PLASMA DEVICES
CONFIGURATION
FLUID MECHANICS
HYDRODYNAMICS
MAGNETIC FIELD CONFIGURATIONS
MAGNETISM
MECHANICAL PROPERTIES
MECHANICS
SPACE
THERMONUCLEAR DEVICES
700340* - Plasma Waves
Oscillations
& Instabilities- (1992-)