Momentum conservation in current drive and alpha-channeling-mediated rotation drive

  title={Momentum conservation in current drive and alpha-channeling-mediated rotation drive},
  author={Ian E. Ochs and Nathaniel J. Fisch},
  journal={Physics of Plasmas},
Alpha channeling uses waves to extract hot ash from a fusion plasma, transferring energy from the ash to the wave. It has been proposed that this process could create a radial electric field, efficiently driving [Formula: see text] rotation. However, existing theories ignore the nonresonant particles, which play a critical role in enforcing momentum conservation in quasilinear theory. Because cross field charge transport and momentum conservation are fundamentally linked, this non-consistency… 
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