Heidbrink, W. W.Fasoli, A.Borba, D.Jaun, A.2008-04-162008-04-162008-04-16199710.1063/1.872262https://infoscience.epfl.ch/handle/20.500.14299/21457An external antenna excites stable eigenmodes in elongated Ohmically heated plasmas in the Joint European Torus (JET) [P.-H. Rebut, R. J. Bickerton, and B. E. Keen, Nucl. Fusion 25, 1011 (1985)]. The frequency of the modes (240-290 kHz) falls in the gap in the magnetohydrodynamic (MHD) continuum that is produced by ellipticity. Some modes are very weakly damped (gamma/omega < 10(-3)). (C) 1997 American Institute of Physics.JETtext::journal::journal article::research article