Observations and Interpretation of Energetic Particle­Driven Ion Cyclotron Emission from JET DT Plasmas

Ion cyclotron emission (ICE) excited by collective instability of fusion α-particles has been observed during deuterium-tritium experiments with radio-frequency heating and neutral beam injection (NBI) in JET. A model based on classical α-particle confinement is broadly consistent with this data. ICE spectra from discharges with high power NBI also show evidence of ion hybrid wave excitation by beam ions, relevant to α-channelling.
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JETR99011 546.59 Kb