Compatibility of the turbulent dynamo concept with reversed field pinches

Journal Article · Mon May 01 04:00:00 EDT 1989 · Phys Fluids B; (United States)

DOI:https://doi.org/10.1063/1.858987· OSTI ID:6309094

Yoshizawa, A

The sustainment phase of reversed field pinches (RFP's) is investigated with the concept of the turbulent dynamo. In the case of a finite toroidal voltage, the familiar alpha--beta dynamo, which is equivalent to Taylor's and modified Bessel function models, cannot satisfy the condition of vanishing currents at the plasma edge. The importance of another alpha term is stressed, and the deep reversal resulting from a large toroidal voltage, the enhanced dynamo effect in ramped discharges, and the F-THETA pumping are discussed in light of the characteristics of the edge region that have a great influence on the global structure of the RFP.

• Research Organization: Institute of Industrial Science, University of Tokyo, 7-22-1, Roppongi, Minato-ku, Tokyo 106, Japan
• OSTI ID: 6309094
• Journal Information: Phys Fluids B; (United States), Journal Name: Phys Fluids B; (United States) Vol. 1:5; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
ANNULAR SPACE
BESSEL FUNCTIONS
CLOSED CONFIGURATIONS
CONFIGURATION
CONFINEMENT
DIFFUSION
END EFFECTS
FUNCTIONS
MAGNETIC FIELD CONFIGURATIONS
MODIFICATIONS
OHM LAW
PINCH EFFECT
PLASMA CONFINEMENT
PLASMA PRESSURE
REVERSE-FIELD PINCH
SPACE
TOROIDAL CONFIGURATION
TURBULENCE