Strong E {times} B Flow Shear and Reduced Fluctuations in a Reversed-Field Pinch

Journal Article · Sun Mar 01 04:00:00 EST 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.80.2137· OSTI ID:570308

Chapman, B E; Chiang, C; Prager, S C; Sarff, J S; Stoneking, M R ^[1]

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1. Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)

Large radial electric field gradients, leading to sheared {bold E}{times}{bold B} flow, are observed in enhanced confinement discharges in the Madison Symmetric Torus reversed-field pinch. The flow shear develops in a narrow region in the plasma edge. Electrostatic fluctuations are reduced over the entire plasma edge with an extra reduction in the shear region. Magnetic fluctuations, resonant in the plasma core but global in extent, are also reduced. The reduction of fluctuations in the shear region is presumably due to the strong shear, but the causes of the reductions outside this region have not been established. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 570308
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 10 Vol. 80; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRIC FIELDS
FLUCTUATIONS
MAGNETIC CONFINEMENT
PLASMA CONFINEMENT
REDUCTION
REVERSE-FIELD PINCH
SHEAR
TOROIDAL CONFIGURATION