Alfvén ion–ion hybrid wave heating in the Phaedrus‐T tokamak

Autor:	M. Vukovic, Richard Majeski, R. Durst, R.J. Fonck, Misha Kishinevsky, D. Diebold, C. Litwin, R. A. Breun, P. H. Probert, Thomas Intrator, Noah Hershkowitz, Artur G. Elfimov, P. D. Nonn, S. Wukitch, G.R. Winz, D. Brouchous, Mark Doczy
Rok vydání:	1996
Předmět:	Physics Tokamak Plasma Condensed Matter Physics Ion law.invention Physics::Plasma Physics law Physics::Space Physics Landau damping Plasma diagnostics Atomic physics Antenna (radio) Dispersion (water waves) Ion cyclotron resonance
Zdroj:	Physics of Plasmas. 3:1331-1339
ISSN:	1089-7674 1070-664X
Popis:	In the Phaedrus‐T tokamak [R. A. Breun et al., Fusion Technol. 19, 1327 (1991)], Alfven waves are indirectly driven by a fast wave antenna array. Small fractions of minority ions are shown to have a large effect on the Alfven spectrum, as measured at the edge. An ion–ion hybrid Alfven mode has been identified by measuring dispersion properties. Landau damping is predicted to be large and spatially localized. These Alfvenic 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 Alfven resonance and provide a promising route to spatially localized tokamak heating and current drive, even for low effective ionic charge Zeff≊1.3–2.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::48670df4157589c1a8e0c2d06e9940dd https://doi.org/10.1063/1.871786 Zobrazit plný text záznamu