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The diffusion of fast ions in Ohmic TFTR discharges

  • Author(s): Heidbrink, WW
  • Barnes, CW
  • Hammett, GW
  • Kusama, Y
  • Scott, SD
  • Zarnstorff, MC
  • Johnson, LC
  • McCune, D
  • Medley, SS
  • Park, HK
  • Roquemore, AL
  • Strachan, JD
  • Taylor, G
  • et al.

Published Web Location

https://doi.org/10.1063/1.859796Creative Commons Attribution 4.0 International Public License
Abstract

Short duration (20 msec) neutral deuterium beams are injected into the TFTR tokamak [Plasma Physics and Controlled Nuclear Fusion Research 1986 (IAEA, Vienna, 1987), Vol. I, p. 51]. The subsequent confinement, thermalization, and diffusion of the beam ions are studied with multichannel neutron and charge exchange diagnostics. The central fast-ion diffusion (<0.05 m2/sec) is an order of magnitude smaller than typical thermal transport coefficients. © 1991 American Institute of Physics.

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