DECAY OF THE GIANT QUADRUPOLE-RESONANCE AND HIGHER EXCITATION STATES IN CA-40

Light charged particles have been measured in coincidence with inelastically scattered fragments from the Ca-40 + Ca-40 reaction at 50 MeV/N. Such a measurement allows to unravel the different reaction mechanisms contributing to the inelastic spectrum: pick-up break-up reactions, knock out and inelastic excitations. The giant quadrupole resonance in Ca-40 is shown to present a 30% non statistical decay branch. A prominent structure at 34 MeV is attributed to target excitation, the decay of this structure is studied