STABILIZATION OF EXTERNAL-MODES IN TOKAMAKS BY RESISTIVE WALLS AND PLASMA ROTATION

Authors
BONDESON A WARD DJ
Citation
A. Bondeson et Dj. Ward, STABILIZATION OF EXTERNAL-MODES IN TOKAMAKS BY RESISTIVE WALLS AND PLASMA ROTATION, Physical review letters, 72(17), 1994, pp. 2709-2712
Citations number
19
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
72
Issue
17
Year of publication
1994
Pages
2709 - 2712
Database
ISI
SICI code
0031-9007(1994)72:17<2709:SOEITB>2.0.ZU;2-A
Abstract
It is shown that low n, pressure-driven, external modes in tokamaks ca n be fully stabilized by resistive walls when the plasma rotates at so me fraction of the sound speed. The stabilization depends on toroidal coupling to sound waves and is affected by ion Landau damping. Two-dim ensional stability calculations are presented to show the resulting ga ins in the beta limit.