Published 1990 | Version v1
Journal article Metadata-only

Stabilisation of drift-tearing modes at the breakdown of the constant-Ψ approximation

Creators

  • 1. Commission of the European Communities, Abingdon (UK). JET Joint Undertaking
  • 2. Massachusetts Inst. of Tech., Cambridge, MA (United States)
  • 3. Scuola Normale Superiore, Pisa (Italy)

Description

The growth rate of the linearised drift-tearing mode is found to be a nonmonotonic function of the stability parameter Δ'. It reaches a maximum for Δ'∼0.5Δ'1>0 and becomes negative for Δ'≥Δ'1, corresponding to the regime where the constant-Ψ approximation breaks down. A second mode, identified as the diamagnetic modification of the η1/3-mode near the condition for ideal MHD marginal stability, becomes unstable for Δ'≥Δ'2>Δ'1, leaving a stable window of values of Δ'. Applications to m=1 mode stability are presented. (author) 8 refs., 4 figs., 1 tab

Additional details

Publishing Information

Journal Title
Europhysics Conference Abstracts
Journal Volume
14B
Series
Europhys. Conf. Abstr.
Journal Page Range
898-901
ISSN
0378-2271
CODEN
ECABD

Conference

Title
17. EPS conference on controlled fusion and plasma heating.
Dates
25-29 Jun 1990.
Place
Amsterdam (Netherlands).

INIS

Country of Publication
Switzerland
Country of Input or Organization
Switzerland
INIS RN
23018266
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
COMPUTERIZED SIMULATION; DISPERSION RELATIONS; DRIFT INSTABILITY; EIGENFREQUENCY; ENERGY BALANCE; HALL EFFECT; KINK INSTABILITY; MAGNETIC FLUX; MAGNETOHYDRODYNAMICS; OHM LAW; PLASMA DIAMAGNETISM; RESONANCE; TEARING INSTABILITY; THEORETICAL DATA; THERMAL CONDUCTIVITY; VISCOSITY
Descriptors DEC
DATA; DIAMAGNETISM; FLUID MECHANICS; HYDRODYNAMICS; INFORMATION; INSTABILITY; MAGNETISM; MECHANICS; NUMERICAL DATA; PHYSICAL PROPERTIES; PLASMA INSTABILITY; PLASMA MACROINSTABILITIES; SIMULATION; THERMODYNAMIC PROPERTIES