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

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