FOLDED POTENTIAL ANALYSIS OF THE EXCITATION OF GIANT-RESONANCES BY HEAVY-IONS

Measurements of the excitation of nuclear giant resonances by heavy-ion inelastic scattering have previously been analyzed using the deformed optical potential model. Here we reexamine these data using a folded potential model which employs a simple, but effective, nucleon-nucleon interaction that was deduced recently from heavy-ion elastic scattering measurements. The resulting estimates of the sum-rule exhaustion by the giant quadrupole resonance increase by amounts ranging from about 20% for the lighter targets to no change for (208)pb. Applying the same model to data for excitation of the giant monopole resonance, we find that these transitions overexhaust the corresponding sum rule even more than previously indicated.