Local effect of equilibrium current on tearing mode stability in the collisional regime. I

Journal Article · Tue Sep 01 04:00:00 EDT 1987 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.866043· OSTI ID:6142147

Cozzani, F; Mahajan, S

The local effect of the equilibrium current on the linear stability of low poloidal number tearing modes in the collisional regime is investigated analytically. The set of eigenmode equations describing the relevant mode dynamics inside the tearing layer, including the local effect of the equilibrium current, is solved variationally to derive the dispersion relations for the mgreater than or equal to2 and m = 1 tearing modes. The local effect of the equilibrium current is found to increase the well-known FKR growth rate for the classical tearing mode, to enhance stabilization for the mgreater than or equal to2 drift-tearing mode, and to slightly increase the growth rate for the m = 1 mode.

• Research Organization: Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas 78712
• OSTI ID: 6142147
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 30:9; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
ANALYTICAL SOLUTION
COLLISIONAL PLASMA
CURRENTS
DRIFT INSTABILITY
ELECTRIC CURRENTS
EQUILIBRIUM
FLUID MECHANICS
HYDRODYNAMICS
INSTABILITY
INSTABILITY GROWTH RATES
MECHANICS
PLASMA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA MICROINSTABILITIES
TEARING INSTABILITY