Inelastic alpha scattering to the giant quadrupole and monopole resonances ofNi58,Mo92, andSn120at 152 MeV

Abstract
The isoscalar giant resonance region has been investigated in Ni58, Mo92, and Sn120 nuclei by inelastic scattering of He4 particles at small angles where the quadrupole and monopole states can be distinguished through their angular distributions. A monopole resonance is observed in the three nuclei, exhausting, respectively, 23%, 85%, and 110% of the E0 energy weighted sum rule.