Variational theory of electrical conductivity and kinetic tearing modes

Journal Article · Tue Sep 01 04:00:00 EDT 1981 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.863576· OSTI ID:6208660

Chang, C S; Dominguez, R R; Hazeltine, R D

A variational theory for Ohm's law, valid for arbitrary collision frequency, is presented for a slab geometry using a pitch angle scattering collision operator. Shear and temperature gradient effects are included but toroidicity is neglected. The variational conductivity is used to examine the effects of shear and electron temperature gradients on tearing mode instabilities. It is shown that shear has a strong stabilizing effect on the so-called ''collisional'' and ''semicollisional'' electron temperature gradient tearing mode instabilities. In addition, the stabilizing effect of shear on the classical resistive and inertial tearing modes is discussed.

• Research Organization: General Atomic Company, San Diego, California 92138
• OSTI ID: 6208660
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 24:9; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700105* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Theoretical-- (-1987)
700107 -- Fusion Energy-- Plasma Research-- Instabilities
CONFIGURATION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON TEMPERATURE
INSTABILITY
PHYSICAL PROPERTIES
PLASMA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
RECTANGULAR CONFIGURATION
SCATTERING
SHEAR
TEARING INSTABILITY
TEMPERATURE GRADIENTS
VARIATIONAL METHODS