RESISTIVE STABILITY OF CANONICAL PROFILES

Authors
TOMIMURA A GALVAO RMO
Citation
A. Tomimura et Rmo. Galvao, RESISTIVE STABILITY OF CANONICAL PROFILES, Nuclear fusion, 33(7), 1993, pp. 1089-1093
Citations number
29
Categorie Soggetti
Phsycs, Fluid & Plasmas","Physics, Nuclear
Journal title
Nuclear fusion → ACNP
ISSN journal
00295515
Volume
33
Issue
7
Year of publication
1993
Pages
1089 - 1093
Database
ISI
SICI code
0029-5515(1993)33:7<1089:RSOCP>2.0.ZU;2-7
Abstract
The stability of tearing modes for current profiles satisfying the pri nciple of profile consistency found by Coppi is investigated using a s imple cylindrical model and compared with tokamak data. Saturated magn etic islands may occur, leading to flat regions superimposed on the ca nonical profile, as recently observed in JET. However, depending on th e values of the safety factor and internal inductance, the m/n = 2/1 a nd 3/2 modes may become simultaneously unstable; giving rise to the po ssibility of disruption triggered by island overlap.