Bifurcation and relaxation of radial electric field in enhanced reversed shear tokamak plasmas

Authors
Shaing, KC Aydemir, AY Hiwatari, R Houlberg, WA Ogawa, Y Zarnstorff, MC
Citation
Kc. Shaing et al., Bifurcation and relaxation of radial electric field in enhanced reversed shear tokamak plasmas, PHYS REV L, 83(19), 1999, pp. 3840-3843
Citations number
26
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
83
Issue
19
Year of publication
1999
Pages
3840 - 3843
Database
ISI
SICI code
0031-9007(19991108)83:19<3840:BARORE>2.0.ZU;2-8
Abstract
It is shown that toroidal magnetic field ripple induced thermal and fast io n loss can drive the radial electric held to bifurcate over the local maxim um of the parallel (or poloidal) viscosity. The subsequent plasma profile e volution reduces the hot particle density and relaxes the radial electric f ield. This behavior is consistent with the experimental observations in enh anced reversed shear mode in tokamaks.