Giant Resonances in F-P Shell Nuclei Studied by Inelastic Scattering of 80 MeV 3he Ions

Spectra of 48Ti, 56Fe, 59Co and 60Ni have been investigated for excitation energies of 10–20 MeV by inelastic scattering of 80 MeV 3He particles. Broad peaks with excitation energies of about 63±1 A−13 MeV and FWHM of 6 MeV have been observed. Much narrower satellite peaks occur at excitation energies about 51±1 A−13 MeV. The angular distributions of the sum of these peaks were compared to extended optical model DWBA calculations which confirm the predominant L = 2 character of the GR. A tentative assignment of L = 2 or 4 was made for the 13.5 MeV satellite peak in 56Fe. We see no definite evidence for the presence of an L = 1 GR component.