Giant resonances in 24Mg and 28Si from 240 MeV 6Li scattering

Elastic and inelastic scattering of 240 MeV Li-6 particles from Mg-24 and Si-28 were measured with the MDM spectrometer. Optical potential parameters for Li-6+Mg-24 and Li-6+Si-28 scattering systems were obtained by fitting elastic scattering with two different folding model potentials as well as W-S potentials. E0-E3 giant resonance strength distributions for Si-28 and Mg-24 were obtained. E0 strength corresponding to 106(-24)(+34)% of the EWSR was identified in Mg-24 and 80(-20)(+35)% was found for Si-28 between E-x=8.0 to 40.0 MeV.