Current diffusion and toroidal electric field response to a non-Ohmic current drive
- Department of Nuclear Engineering & Engineering Physics, University of Wisconsin---Madison, Madison, Wisconsin 53706-1687 (United States)
Resistive current diffusion and inductive electric field evolution in response to an auxiliary current drive are analyzed for conditions typical for tokamak operation. Special emphasis is placed on a localized current drive. Relaxation time scales for a broad range of conductivity profiles are calculated, using the Wentzel--Kramer--Brillouin (WKB) approximation, and compared with numerical solutions. Validity of the effective circuit model is discussed. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.
- Research Organization:
- Univ. of Wisconsin, Madison, WI (United States)
- DOE Contract Number:
- FG02-88ER53264
- OSTI ID:
- 130735
- Journal Information:
- Physics of Plasmas, Vol. 2, Issue 12; Other Information: PBD: Dec 1995
- Country of Publication:
- United States
- Language:
- English
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