Observations of toroidal coupling for low-n Alfven modes in the TCA tokamak

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/231682

Title: Observations of toroidal coupling for low-n Alfven modes in the TCA tokamak
Author(s): Appert, K.; Collins, G. A.; Hofmann, F.; Keller, R.; Lietti, A.; Lister, J. B.; Pochelon, A.; Villard, L.
Abstract: The antenna structure in the TCA tokamak is phased to excite preferentially Alfven waves with known toroidal and poloidal wave numbers. Surprisingly, the loading spectrum includes both discrete and continuum modes with poloidal wave numbers incompatible with the antenna phasing. These additional modes, which are important for our heating experiments, can be attributed to linear mode coupling induced by the toroidicity of the plasma column, when we take into account ion-cyclotron effects.
Publication type: Journal article
Source: Physical Review Letters, Vol. 54, no. 15 (Apr 1985), pp. 1671-1674
Publication year: 1985
FOR Code(s): 02 Physical Sciences
Keyword(s): Alfven waves; Antenna structure; Ion cyclotron heating; Plasma; Poloidal waves; TCA; Tokamak geometry; Toroidal waves
Publisher: American Physical Society
ISSN: 0031-9007
Publisher URL: http://dx.doi.org/10.1103/PhysRevLett.54.1671
Peer reviewed