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Letters: Loss of beam ions to the inside of the pdx tokamak during a fishbone instability

  • Author(s): Heidbrink, WW
  • Beiersdorfer, P
  • et al.
Abstract

Using data from two vertical charge exchange detectors on the Poloidal Divertor Experiment (PDX), a set of conditions have been identified for which loss of beam ions inwards in major radius is observed during a fishbone instability. Previously, it was reported that beam ions were lost only to the outside of the PDX tokamak. The losses to the inside are two orders of magnitude smaller than the losses to the outside and are consistent with numerical predictions based on the mode particle pumping theory. © IOP Publishing Ltd.

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