Neoclassical transport fluxes in the plateau regime in nonaxisymmetric toroidal plasmas

Technical Report · Wed Jan 01 04:00:00 EST 1986

OSTI ID:6279468

Shaing, K C; Hirshman, S P; Callen, J D

The neoclassical fluxes in the plateau regime in an arbitrary large-aspect-ratio, nonaxisymmetric toroidal system are calculated based on the moment equation approach. The results are applicable for any nonaxisymmetric system. Two specific examples, one for a stellarator, and the other one for a rippled tokamak, are considered. It is found that for most stellarators, the helical magnetic field contribution to the particle and heat fluxes is as important as the toroidicity contributions, and should not be neglected. Further, the helical magnetic field contribution to the parallel viscosity is capable of reversing the directions of the bootstrap current and Ware pinch flux, while in a rippled tokamak, the neoclassical particle and heat fluxes are the same as those in an axisymmetric tokamak after the radial electric field and parallel flow velocity are determined without the external sources. 15 refs.

• Research Organization: Oak Ridge National Lab., TN (USA); Wisconsin Univ., Madison (USA). Dept. of Nuclear Engineering
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6279468
• Report Number(s): ORNL/TM-9594; ON: DE86006749
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700105* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Theoretical-- (-1987)
ANNULAR SPACE
CHARGED-PARTICLE TRANSPORT THEORY
CLOSED PLASMA DEVICES
CONFIGURATION
HEAT FLUX
NEOCLASSICAL TRANSPORT THEORY
PLATEAU REGIME
SPACE
STELLARATORS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TOROIDAL CONFIGURATION
TRANSPORT THEORY