  Nonlocal coordinate space optical potentials for the scattering of 65 MeV
protons from nuclei ranging in mass from 6Li to 238U have been defined by
folding a complex, medium dependent effective interaction with the density
matrix elements of each target. The effective interaction is based upon
solutions of the Lippmann--Schwinger and Brueckner--Bethe--Goldstone equations
having the Paris potential as input. The nuclear structure information required
in our folding model are the one body density matrix elements for the target
and the single nucleon bound state wave functions that they weight. For light
mass nuclei, very large basis shell model calculations have been made to obtain
the one body density matrix elements. For medium and heavy mass nuclei, a very
simple shell model prescription has been used. The bound state single particle
wave functions that complete the nuclear density matrices are either
Woods--Saxon or harmonic oscillator functions. The former are employed in most
cases when large basis structure is available. For light nuclei (A < 16)
Woods--Saxon potential parameters and harmonic oscillator lengths are
determined from fits to electron scattering form factors. For all other nuclei,
we use harmonic oscillator functions with the oscillator lengths set from an
A^{1/6} mass law. Using this microscopic model, optical potentials result from
which differential cross sections, analyzing powers and spin rotations are
found. In general the calculated results compare very well with data when the
effective interactions are determined from a mapping of nucleon--nucleon g
matrices. This is not the case when effective interactions built from a mapping
of (free) t matrices are used.
