Comparison of experimental and theoretical fast ion slowing-down times in DIII-D

Abstract

Short deuterium beam pulses are injected into the D III–D tokamak to study the variation of beam slowingdown time with temperature and density. The slowing-down time is inferred from the rate of decay of the d(d, n)3He neutron emission. To within 30%, the results are consistent with Sivukhin's classical theory. The short beam pulses, are also useful for measurements of the central deuterium density. © 1988 IOP Publishing Ltd