ELASTIC-SCATTERING OF 318 MEV LI-6 FROM C-12 AND SI-28 - UNIQUE PHENOMENOLOGICAL AND FOLDING-MODEL POTENTIALS AND THE VALIDITY OF THE M3Y EFFECTIVE INTERACTION - COMMENT

We examine the assertion that elastic data for Li-6 scattering at 210 and 318 MeV can be reproduced by a folding model using the M3Y interac tion without any need for renormalization. We find this claim to be co nfusing, because the prescription used for knockon exchange differs fr om that usually regarded as part of the M3Y model, and unjustified bec ause we find that the optimum fits to the data do require a reduction of about 30% in the strength of the M3Y interaction. The use of the M3 Y model is reviewed briefly.