Radial Electric Field Measurements in Reversed Shear Plasmas

Measurements of the radial electric field have been obtained on the Tokamak Fusion Test Reactor utilizing the motional Stark effect diagnostic. A large negative excursion in the radial electric field occurs before the transition to the enhanced reversed magnetic shear mode. The electric field is loc...

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Veröffentlicht in:	Physical Review Letters 1998-06, Vol.80 (22), p.4887-4890
Hauptverfasser:	Levinton, F. M., Bell, R. E., Batha, S. H., Synakowski, E. J., Zarnstorff, M. C.
Format:	Artikel
Sprache:	eng
Schlagworte:	70 PLASMA PHYSICS AND FUSION ELECTRIC FIELDS EXCURSIONS FIELD-REVERSED THETA PINCH DEVICES FLUCTUATIONS MAGNETIC FIELDS PLASMA CONFINEMENT PLASMA DIAGNOSTICS ROTATION SHEAR PROPERTIES STARK EFFECT TFTR TOKAMAK
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container_end_page	4890
container_issue	22
container_start_page	4887
container_title	Physical Review Letters
container_volume	80
creator	Levinton, F. M. Bell, R. E. Batha, S. H. Synakowski, E. J. Zarnstorff, M. C.
description	Measurements of the radial electric field have been obtained on the Tokamak Fusion Test Reactor utilizing the motional Stark effect diagnostic. A large negative excursion in the radial electric field occurs before the transition to the enhanced reversed magnetic shear mode. The electric field is localized to a narrow spatial region and is not observed in discharges without the transition to improved confinement. Concomitant with the radial electric field excursion is a change in the measured impurity poloidal rotation velocity and bursts of magnetic fluctuations. {copyright} {ital 1998} {ital The American Physical Society}
doi_str_mv	10.1103/PhysRevLett.80.4887
format	Article
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subjects	70 PLASMA PHYSICS AND FUSION ELECTRIC FIELDS EXCURSIONS FIELD-REVERSED THETA PINCH DEVICES FLUCTUATIONS MAGNETIC FIELDS PLASMA CONFINEMENT PLASMA DIAGNOSTICS ROTATION SHEAR PROPERTIES STARK EFFECT TFTR TOKAMAK
title	Radial Electric Field Measurements in Reversed Shear Plasmas
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