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 the Joint European Torus. 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 channeling.
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McClements et al. (1999) studied this question.
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