Propagation and Ion Dynamics of Waves in Amplitude Modulated Helicon Plasmas

Journal Article · Sun Jan 15 00:00:00 EST 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2168808· OSTI ID:20797883

Stark, A ^[1]; Grulke, O; Klinger, T ^[1]

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1. Max-Planck Institute for Plasma Physics, EURATOM Association, Greifswald (Germany)

A helicon source is driven with amplitude modulated RF at modulation frequencies near the ion cyclotron frequency in the VINETA device. In response to the modulation propagating electromagnetic waves are found, whose dispersion differs significantly from linear wave dispersion theory. This indicates that the observed waves are generated by non-linear wave coupling of the helicon waves with a second strongly damped or evanescent wave. Laser induced fluorescence measurements reveal a local increase of the ion temperature at the minimum of the modulation drive.

• OSTI ID: 20797883
• Journal Information: AIP Conference Proceedings, Vol. 812, Issue 1; Conference: PLASMA 2005: International conference on research and applications of plasmas; 3. German-Polish conference on plasma diagnostics for fusion and applications; 5. French-Polish seminar on thermal plasma in space and laboratory, Opole-Turawa (Poland), 6-9 Sep 2005; Other Information: DOI: 10.1063/1.2168808; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
COUPLING
CYCLOTRON FREQUENCY
DISPERSION RELATIONS
FLUORESCENCE
HELICON WAVES
ION TEMPERATURE
IONS
LASER RADIATION
MODULATION
NONLINEAR PROBLEMS
PLASMA
WAVE PROPAGATION