Discrete spectrum of Alfvén ion–ion hybrid waves

Autor:	M. Vukovic, G.R. Winz, P. H. Probert, Artour G Elfimov, Thomas Intrator
Rok vydání:	1996
Předmět:	Physics Toroid Tokamak Plasma Condensed Matter Physics Ion law.invention Antenna array Physics::Plasma Physics law Dispersion relation Landau damping Atomic physics Dispersion (water waves)
Zdroj:	Physics of Plasmas. 3:1054-1063
ISSN:	1089-7674 1070-664X
Popis:	In the Phaedrus‐T tokamak [R. Majeski et al., Phys Fluids B 5, 2506 (1993)], Alfven waves are indirectly driven by a fast wave antenna array. Small fractions of minority ions can couple Alfven and ion–ion hybrid waves and have a large effect on the wave numbers accessible for a given launched frequency. A discrete spectrum and toroidal damping for these modes has been identified by measuring dispersion properties at the edge. Landau damping is predicted to be large and spatially localized and to be responsible for the experimentally observed electron heating (T. Intrator et al., ‘‘Alfven ion–ion hybrid wave heating in the Phaedrus‐T tokamak,’’ to appear in Phys. Plasmas) and current drive near the core of the tokamak plasmas.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c1c2f2e9c965ae6b891d52474805e024 https://doi.org/10.1063/1.871761 Zobrazit plný text záznamu