University of California, Irvine, CA, USA
+) JET, Abingdon, Oxfordshire OX14 3EA, United Kingdom
*) Alfvén Laboratory, Teknikringen 31, KTH, SE-100 44 Stockholm, Sweden
An external antenna excites stable eigenmodes in elongated ohmically heated plasmas in the Joint European Torus. The frequency of the modes (240-290 kHz) falls in the gap in the MHD continuum that is produced by ellipticity. Some modes are very weakly damped (|gamma/omega|<0.001).
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