A stability criterion for energetic particle-Alfven modes

Journal Article · Fri Mar 01 04:00:00 EST 1991 · Physics of Fluids B; (USA)

DOI:https://doi.org/10.1063/1.859904· OSTI ID:5830381

Betti, R; Freidberg, J P ^[1]

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1. Plasma Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (US)

A stability criterion is derived for energetic particle-Alfven modes. The criterion is valid for arbitrary aspect ratio, arbitrary {beta}, noncircular, axisymmetric tori. The plasma is modeled by a magnetohydrodynamic (MHD) core plus a fully kinetic Vlasov species of hot particles. Electron kinetic effects are neglected. In spite of the complexity associated with the analysis of the Vlasov species, a simple but exact stability boundary is derived. The criterion is very fluidlike in nature, suggesting that accurate evaluation in realistic geometries can be accomplished with perhaps only minor modifications to any one of the existing ideal MHD stability codes.

• DOE Contract Number: AC02-78ET51013
• OSTI ID: 5830381
• Journal Information: Physics of Fluids B; (USA), Journal Name: Physics of Fluids B; (USA) Vol. 3:3; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
ALFVEN WAVES
ASPECT RATIO
BETA RATIO
BOLTZMANN-VLASOV EQUATION
DIFFERENTIAL EQUATIONS
EQUATIONS
FLUID MECHANICS
HOT PLASMA
HYDRODYNAMICS
HYDROMAGNETIC WAVES
MAGNETOHYDRODYNAMICS
MECHANICS
MODIFICATIONS
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA
PLASMA SIMULATION
SIMULATION
STABILITY
SYMMETRY
TORI