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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 'BY' version 4.0 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 m 2/sec) is an order of magnitude smaller than typical thermal transport coefficients. © 1991 American Institute of Physics.

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