|dc.description.abstract||We have measured cross sections and analyzing powers for 40, 42, 44, 48Ca
and 16O at IUCF using the new high-resolution K600 spectrometer for 100
and 200 MeV protons. Measurements at 318 MeV for 40, 42, 44 ,48Ca and 32 ,34S
were done at LAMPF using the HRS spectrometer.
In this work, we obtain empirical effective interactions by fitting inelastic
scattering data for many low-lying normal-parity isoscalar excitations of
the self-conjugate nuclei 16O and 40Ca, assuming a local tp folding model.
One-nucleon transition densities are from (e, e') . The fitted interactions are
iterated to generate optical potentials self-consistently. We find that the
fitted parameters are essentially target independent, which supports the validity
of the local density hypothesis. Elastic scattering is predicted by extracting
the rearrangement factor (1 + pd/dp) from the fitted in elastic interactions.
Below 300 MeV the strength of the empirical interaction is reduced
at zero density and the general density dependence is weaker compared to
the theoretical interaction. Above 300 MeV we find the density dependence
is stronger than expected. The empirical interactions provide better descriptions of elastic and inelastic data than IA calculations or LDA calculations
using theoretical G-matrices, and can be used for nuclear structure studies
of other nuclei . Fitted optical potentials above 300 MeV are comparable to
equivalent Schrödinger potentials from the relativistic IA2 model.||en_US