Electron Bernstein Waves at the WEGA Stellarator - Heating and Emission

Autor: Y. Podoba, S. Marsen, Heinrich P. Laqua, E. Chlechowitz, Matthias Otte, Michael Glaubitz, Torsten Stange, Friedrich E. Wagner, Robert Wolf, D. Zhang
Jazyk: angličtina
Rok vydání: 2010
Předmět:
Zdroj: Plasma and Fusion Research
Popis: This paper gives an overview of recent results on the application of electron Bernstein waves for plasma heating and diagnostic purposes at the WEGA stellarator. By applying a two-step mode conversion process it was possible to reach over-dense argon and helium plasmas with central densities of above 0.97 × 1019 m−3 at a magnetic field strength of 0.5 T fully sustained by electrostatic Bernstein waves. An unexpected feature observed during the experiments was the detection of a strong increase of the radiation temperature associated with the existence of a super-thermal electron component in the keV-range during this heating period.
Databáze: OpenAIRE