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research article
Experimental observations of mode-converted ion cyclotron waves in a tokamak plasma by phase contrast imaging
The process of mode conversion, whereby an externally launched electromagnetic wave converts into a shorter wavelength mode(s) in a thermal plasma near a resonance in the index of refraction, is particularly important in a multi-ion species plasma near the ion cyclotron frequency. Using phase contrast imaging techniques (PCI), mode-converted electromagnetic ion cyclotron waves have been detected for the first time in the Alcator C-Mod tokamak near the H-He-3 ion-ion hybrid resonance region during high power rf heating experiments. The results agree with theoretical predictions.
Type
research article
Web of Science ID
WOS:000182320200023
Authors
Publication date
2003
Published in
Volume
90
Issue
15
Article Number
155004
Peer reviewed
REVIEWED
Available on Infoscience
April 16, 2008
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