Statistical compound-nucleus contributions to enhanced back-angle cros
s sections for Li-6 + C-12 elastic scattering and for inelastic scatte
ring to the channels, Li-6(3(+), 2.18 MeV) + C-12(g.s.) and Li-6(g.s.)
+ C-12(2(+), 4.44 MeV), are studied. Differential cross sections and
vector analyzing powers in the range Theta(c.m.) approximate to 130 de
grees-165 degrees have been measured at E(c.m.) = 20 MeV by detecting
recoil C-12 nuclei from (6)<(Li)over right arrow> elastic scattering a
nd inelastic scattering to the Li-6(3(+), 2.18 MeV) state. Adding a st
atistical compound-nucleus contribution is shown in general to reduce
the magnitude, and to leave unaffected the sign, of theoretical calcul
ations of vector analyzing powers. Analysis, including Hauser-Feshbach
calculations, of the above data along with previous data indicates th
at compound-nucleus contributions are unimportant in the elastic and i
nelastic Li-6(2.18 MeV) scattering channels, and are insufficient to r
esolve discrepancies between current coupled-channels calculations and
large-angle data for inelastic C-12(4.44 MeV) scattering.