W.R. Webber New Mexico State University, Las Cruces, New Mexico, 88003, USA

We have examined the effects of reacceleration using realistic
propagation parameters for the matter density, halo size, diffusion
coefficient, etc., in a Monte Carlo diffusion model. Taking a
diffusion coefficient ~P ^{0.33} we can reproduce the observed
B/C and sub Fe/Fe ratios using a rigidity dependence of dP/dt similar
to that used earlier by Seo and Ptuskin. In this case the IS
dependence at low energies can be explained without a break in K (a
plus), but the observed dependence at high energies is steeper than
calculated (a minus). The IS energy spectra of the low Z species such
as H, He, C, etc., are changed significantly below ~1 GeV/nuc from
their shape with no reacceleration, thus requiring different
assumptions regarding the source spectra, etc. The primary/primary
ratios such as H/He, He/O, etc., are also changed significantly
requiring different assumptions for the source abundance ratios. The
amount of reacceleration needed to reproduce the observed B/C ratio is
energy dependent and ~35% of the particles interstellar energy below 1
GeV/nuc. We have searched for more decisive examples to show that this
level of reacceleration is actually occurring. The behavior of the
^{2}H/^{4}He ratio and the K-capture nuclei ratios at
low energies are two possible tests.