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Author Intrator, T. ♦ Probert, P. H. ♦ Vukovic, M. ♦ Wukitch, S. ♦ Elfimov, A. ♦ Durst, R. ♦ Breun, R. A. ♦ Brouchous, D. ♦ Diebold, D. ♦ Doczy, M. ♦ Fonck, R. ♦ Hershkowitz, N. ♦ Kishinevsky, M. ♦ Litwin, C. ♦ Majeski, R. ♦ Nonn, P. ♦ Winz, G.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION ♦ TOKAMAK DEVICES ♦ ALFVEN WAVES ♦ CURRENT-DRIVE HEATING ♦ ION CYCLOTRON-RESONANCE ♦ LANDAU DAMPING ♦ PLASMA DIAGNOSTICS ♦ PLASMA HEATING
Abstract In the Phaedrus-T tokamak [R. A. Breun {ital et} {ital al}., Fusion Technol. {bold 19}, 1327 (1991)], Alfv{acute e}n waves are indirectly driven by a fast wave antenna array. Small fractions of minority ions are shown to have a large effect on the Alfv{acute e}n spectrum, as measured at the edge. An ion{endash}ion hybrid Alfv{acute e}n mode has been identified by measuring dispersion properties. Landau damping is predicted to be large and spatially localized. These Alfv{acute e}nic waves are experimentally shown to generate correlated electron heating and changes in density near the core of the tokamak plasma. Fast wave antenna fields can mode convert at a hybrid Alfv{acute e}n resonance and provide a promising route to spatially localized tokamak heating and current drive, even for low effective ionic charge {ital Z}{sub eff}{approx_equal}1.3{endash}2. {copyright} {ital 1996 American Institute of Physics.}
ISSN 1070664X
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-04-01
Publisher Department University of Wisconsin
Publisher Place United States
Journal Physics of Plasmas
Volume Number 3
Issue Number 4
Organization University of Wisconsin


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