Core Poloidal Rotation and Internal Trnasport Barrier Formation in TFTR

Technical Report · Wed Dec 31 23:00:00 EST 1997

DOI:https://doi.org/10.2172/3750· OSTI ID:3750

Synakowski, E J ^[1]; Levinton, F M; Zarnstorff, M C; Bell, R E; Batha, S H

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1. Princeton Plasma Physics Laboratory

Impurity poloidal rotation velocities have been measured in the core of TFTR plasmas using a new spectroscopic diagnostic. Two types of transitions to enhanced confinement in reversed shear plasmas are examined. A bifurcation in carbon poloidal rotation is observed to occur before the transition to enhanced confinement for one of these types, while other measured plasmas parameters remain constant. A narrow radial region with reversed poloidal rotation and rotational shear is established 60-100 ms before the transition, and is associated with a large negative radial electric field.

• Research Organization: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ
• Sponsoring Organization: USDOE Office of Energy Research (ER)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 3750
• Report Number(s): PPPL-3280; ON: DE00003750
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Angular Velocity
Plasma Diagnostics
TFTR Tokamak