CURRENT DIFFUSION AND TOROIDAL ELECTRIC-FIELD RESPONSE TO A NONOHMIC CURRENT DRIVE

Authors
LITWIN C
Citation
C. Litwin, CURRENT DIFFUSION AND TOROIDAL ELECTRIC-FIELD RESPONSE TO A NONOHMIC CURRENT DRIVE, Physics of plasmas, 2(12), 1995, pp. 4542-4550
Citations number
13
Categorie Soggetti
Phsycs, Fluid & Plasmas
Journal title
Physics of plasmas → ACNP
ISSN journal
1070664X
Volume
2
Issue
12
Year of publication
1995
Pages
4542 - 4550
Database
ISI
SICI code
1070-664X(1995)2:12<4542:CDATER>2.0.ZU;2-V
Abstract
Resistive current diffusion and inductive electric field evolution in response to an auxiliary current drive are analyzed for conditions typ ical for tokamak operation. Special emphasis is placed on a localized current drive. Relaxation time scales for a broad range of conductivit y profiles are calculated, using the Wentzel-Kramer-Brillouin (WKB) ap proximation, and compared with numerical solutions. Validity of the ef fective circuit model is discussed. (C) 1995 American Institute of Phy sics.