Published 1995 | Version v1
Report Open

Ion temperature gradient driven ballooning modes in tokamaks

Creators

  • 1. Chalmers Univ. of Technology, Goeteborg (Sweden). Inst. for Electromagnetic Field Theory and EURATOM/NFR Association
  • 2. Sofia Univ. (Bulgaria). Faculty of Science
  • 3. Australian National Univ., Canberra, ACT (Australia). Dept. of Theoretical Physics and Plasma Research Lab.

Description

The ion temperature gradient driven ballooning mode is investigated using two-fluid, gyrofluid and gyrokinetic descriptions. The linear eigenmode equation is solved numerically in a model equilibrium with shifted circular magnetic surfaces. The localization of the eigenmodes, which persist in the magnetohydrodynamic (MHD) second stability region, and the mode structure are displayed. The role of finite-Larmor radius (FLR) and magnetic drift resonance effects on the growth rate are elucidated. Negative magnetic shear is found to have a stabilizing effect on the mode. 24 refs, 7 figs

Availability note (English)

MF available from INIS under the Report Number.

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Additional details

Publishing Information

Imprint Pagination
25 p.
ISSN
0281-1308
Report number
CTH-IEFT-PP--95-04

INIS

Country of Publication
Sweden
Country of Input or Organization
Sweden
INIS RN
26078656
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
BALLOONING INSTABILITY; ION TEMPERATURE; MAGNETIC SURFACES; MAGNETOHYDRODYNAMICS; TOKAMAK DEVICES
Descriptors DEC
CLOSED PLASMA DEVICES; FLUID MECHANICS; HYDRODYNAMICS; INSTABILITY; MAGNETIC FIELD CONFIGURATIONS; MECHANICS; PLASMA INSTABILITY; PLASMA MACROINSTABILITIES; THERMONUCLEAR DEVICES