Resonant and Nonresonant Electron Cyclotron Heating at Densities above the Plasma Cutoff by O-X-B Mode Conversion at the W7-As Stellarator

Journal Article · Thu May 01 00:00:00 EDT 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.78.3467· OSTI ID:544326

Laqua, H; Erckmann, V; Hartfuss, H; Laqua, H

The extension of the experimentally accessible plasma densities with electron cyclotron heating beyond the plasma cutoff density and the removal of the restriction to a resonant magnetic field, both via mode conversion heating from an O-wave to an X-wave and, finally, to an electron Bernstein (O-X-B) wave, was investigated and successfully demonstrated at the W7-AS stellarator. In addition to the heating effect, clear evidence for both mode conversion steps was detected for the first time. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 544326
• Journal Information: Physical Review Letters, Vol. 78, Issue 18; Other Information: PBD: May 1997
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
ELECTRON CYCLOTRON-RESONANCE
HEATING
MODE CONVERSION
STELLARATORS
PLASMA
MAGNETIC FIELDS
BERNSTEIN MODE
WAVE PROPAGATION
DENSITY