Helicon waves drive current inside a fusion experiment
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DIII-D finds evidence for an additional current-drive approach.
Researchers report evidence that helicon waves can drive auxiliary current in DIII-D’s plasma.
Its megawatt-scale radio-frequency system deposited power in the plasma core, with measurements matching modelling.
Sustaining current matters for steady tokamak operation. The result adds an experimental option.
It does not demonstrate a continuously operating fusion power plant or net electricity generation.
Source: preprint first submitted September 11, 2026, 14:15:17 Beijing / 02:15:17 US Eastern daylight time.
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