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.


Published in:
Physical Review Letters, 90, 15
Year:
2003
ISSN:
0031-9007
ISBN:
0031-9007
Other identifiers:
Laboratories:
SPC
CRPP




 Record created 2008-04-16, last modified 2018-09-13


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