Nonambipolar Magnetic-Fluctuation-Induced Particle Transport and Plasma Flow in the MST Reversed-Field Pinch

Journal Article · Fri Aug 03 00:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.99.055004· OSTI ID:20957927

Ding, W X; Brower, D L ^[1]; Craig, D ^[2]; Deng, B H ^[1]; Prager, S C; Sarff, J S; Svidzinski, V ^[2]

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1. Department of Physics and Astronomy, University of California at Los Angeles, Los Angeles, California 90095 (United States)
2. Center for Magnetic Self-Organization in Astrophysical and Laboratory Plasmas, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)

First direct measurements of nonambipolar magnetic fluctuation-induced charge transport in the interior of a high-temperature plasma are reported. Global resistive tearing modes drive the charge transport which is measured in the vicinity of the resonant surface for the dominant core resonant mode. Finite charge transport has two important consequences. First, it generates a potential well along with locally strong electric field and electric field shear at the resonant surface. Second, this electric field induces a spontaneous ExB driven zonal flow.

• OSTI ID: 20957927
• Journal Information: Physical Review Letters, Vol. 99, Issue 5; Other Information: DOI: 10.1103/PhysRevLett.99.055004; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHARGE TRANSPORT
ELECTRIC FIELDS
ELECTROMAGNETIC FIELDS
HOT PLASMA
POTENTIALS
REVERSED-FIELD PINCH DEVICES
TEARING INSTABILITY