Determination of the noninductive current profile in tokamak plasmas

Journal Article · Mon Oct 31 04:00:00 EST 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.73.2444· OSTI ID:6946474

Forest, C B; Kupfer, K; Luce, T C; Politzer, P A; Lao, L L; Wade, M R; Whyte, D G; Wroblewski, D ^[1]

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1. General Atomics, San Diego, California 92186-9784 (United States)

The noninductive part of the measured current profile has been determined for DIII-D plasmas. A technique for determining the flux surface average of the quantity [bold E][center dot][bold B] and a model for the resistivity separates the current profile into inductive and noninductive portions. Analysis shows directly that the neoclassical resistivity is adequate to explain the experimental observations, while Spitzer resistivity is not, and that a large noninductive current exists in plasmas for which large neutral beam current drive and pressure driven bootstrap currents are expected.

• DOE Contract Number: AC03-89ER51114; AC05-84OR21400
• OSTI ID: 6946474
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 73:18; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700330* -- Plasma Kinetics
Transport
& Impurities-- (1992-)
BEAM INJECTION
BOOTSTRAP CURRENT
CLOSED PLASMA DEVICES
CURRENT DENSITY
CURRENTS
DATA
DIAGNOSTIC TECHNIQUES
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRIC FIELDS
ELECTRON TEMPERATURE
EQUILIBRIUM
EXPERIMENTAL DATA
HIGH-BETA PLASMA
INDUCTION
INFORMATION
MAGNETIC FLUX
NEUTRAL ATOM BEAM INJECTION
NUMERICAL DATA
PLASMA
THERMONUCLEAR DEVICES
TOKAMAK DEVICES