  Microscopic optical potentials for nucleon-nucleus (NA) scattering obtained
from the full folding of the effective g matrices, solutions of the
Bruckner-Bethe-Goldstone equation, with the densities of the target, are
applied to the case of neutron-nucleus scattering. Given that the optical
potentials are specified in all two-body angular momentum, spin and isospin
channels available to the NA scattering, the only difference in this model
description of proton and neutron scattering observables for a given nucleus is
in the inclusion of the Coulomb interaction. A priori microscopic optical model
predictions for neutron and proton elastic scattering are compared with results
from a phenomenological optical model and with data. New measurements are
recommended to reduce discrepancies in the existing database, and to
differentiate between different theoretical predictions.
