Plasma resistivity in the presence of a reversed-field pinch dynamo

Journal Article · Sun Jul 01 04:00:00 EDT 1984 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.864821· OSTI ID:6666086

Schoenberg, K F; Moses, Jr, R W; Hagenson, R L

A global calculation of reversed-field pinch (RFP) plasma resistivities, eta/sup w//sub parallel/ and eta/sup k//sub parallel/, based on power balance and magnetic helicity balance, respectively, is discussed. For reasonable RFP beta values (..beta..<0.1), eta/sup k//sub parallel/ provides an estimate of plasma resistivity parallel to the magnetic field, and agrees with the Spitzer resistivity within a factor of two. The expression (1-eta/sup k//sub parallel//eta/sup w//sub parallel/) indictes the fraction of ohmic heating power absorbed by fluctuations in the discharge. An examination of 180 kA discharges on the Los Alamos ZT-40M experiment suggests that approximately one-third of the ohmic heating power drives fluctuations, including the dynamo effect, during discharge sustainment.

• Research Organization: Los Alamos National Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 6666086
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 27:7; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
&amp; Production
CONFINEMENT
ELECTRIC CONDUCTIVITY
ELECTRIC HEATING
ELECTRICAL PROPERTIES
FLUCTUATIONS
HEATING
HELICITY
HIGH-BETA PLASMA
JOULE HEATING
MAGNETIC FIELDS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
PINCH EFFECT
PLASMA
PLASMA CONFINEMENT
PLASMA HEATING
RESISTANCE HEATING
REVERSE-FIELD PINCH
SHEAR
VARIATIONS