Phys. Rev. Lett. 90, 075003 (2003) [4 pages]Electron-Bernstein-Wave Current Drive in an Overdense Plasma at the Wendelstein 7-AS StellaratorReceived 3 September 2002; published 21 February 2003 Electron-Bernstein-wave (EBW) current drive in an overdense plasma was demonstrated at the Wendelstein 7-AS stellarator for the first time. The EBWs were generated by O-X-B mode conversion. The relatively high current drive efficiency was consistent with theoretical predictions. The experiments provided first investigations of EBW phase space interaction for wave refractive indices much larger than unity. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.075003
DOI:
10.1103/PhysRevLett.90.075003
PACS:
52.55.Hc, 52.35.Hr, 52.50.Sw, 52.55.Wq
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