Experimental study of neoclassical currents
A detailed experimental study of the bootstrap and Pfirsch-Schlueter currents that are predicted by neoclassical transport theory is presented. In a toroidal octupole, on magnetic surfaces within the separatrix, the observed parallel plasma currents are in excellent quantitative agreement with neoclassical theory with regard to the spatial structure (along a magnetic surface), collisionality dependence, and toroidal magnetic field dependence. On magnetic surfaces outside the separatrix, the ion portion of the parallel current is in agreement with neoclassical theory, but the electron parallel current is observed to obtain a unidirectional component that deviates from and exceeds the theoretical prediction.
- Research Organization:
- Physics Department, University of Wisconsin, Madison, Wisconsin 53706
- OSTI ID:
- 6415008
- Journal Information:
- Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 29:1; ISSN PFLDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
700104* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Experimental-- (-1987)
ANNULAR SPACE
BOOTSTRAP MODEL
CHARGED PARTICLES
COLLISIONAL PLASMA
COMPOSITE MODELS
CONFIGURATION
CORRELATIONS
CURRENTS
ELECTRIC CURRENTS
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
IONS
LEPTONS
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC SURFACES
MATHEMATICAL MODELS
PARTICLE MODELS
PFIRSCH-SCHLUETER REGIME
PLASMA
SPACE
TOROIDAL CONFIGURATION