The diffusion of fast ions in Ohmic TFTR discharges

Heidbrink, W. W.; Barnes, Cris W.; Hammett, G. W.; Kusama, Y.; Scott, S. D.; Zarnstorff, M. C.; Johnson, L. C.; McCune, D.; Medley, S. S.; Park, H. K.; Roquemore, A. L.; Strachan, J. D.; Taylor, G.
November 1991
Physics of Fluids B: Plasma Physics;Nov91, Vol. 3 Issue 11, p3167
Academic Journal
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.


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