Relaxation model for helicity injection in Ohmic and oscillating current-driven reversed field pinch discharges

Journal Article · Fri Aug 01 00:00:00 EDT 1986 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.865504· OSTI ID:5406465

Finn, J M

A model for studying current drive by helicity injection in reversed field pinches (RFP's) is proposed. In this model, the helicity supplied by the external circuits is injected into an exterior vacuum region that models the resistive edge region where skin currents can decay. Full Taylor relaxations allow this injected helicity to penetrate into the bulk of the plasma. Results on Ohmically driven discharges are shown, benchmarking the model with current experiments. Results on oscillating current drive are also presented, including studies of the dependence upon the driving voltages, the edge resistivity, and the number of relaxations per oscillation cycle.

• Research Organization: Laboratory for Plasma and Fusion Energy Studies, University of Maryland, College Park, Maryland 20742
• OSTI ID: 5406465
• Journal Information: Phys. Fluids; (United States), Vol. 29:8
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA
ELECTRIC CURRENTS
MAGNETOHYDRODYNAMICS
RELAXATION
REVERSE-FIELD PINCH
PLASMA CONFINEMENT
CURRENT-DRIVE HEATING
HELICITY
JOULE HEATING
MATHEMATICAL MODELS
CONFINEMENT
CURRENTS
ELECTRIC HEATING
FLUID MECHANICS
HEATING
HYDRODYNAMICS
MECHANICS
PARTICLE PROPERTIES
PINCH EFFECT
PLASMA HEATING
RESISTANCE HEATING
700101* - Fusion Energy- Plasma Research- Confinement
Heating
& Production