The 3He-scattering potential from a model-unrestricted analysis of 3He+208Pb and its interpretation in the folding model

Abstract The elastic scattering of 3 He from 208 Pb has been measured at 49 MeV and 130 MeV over a large angular range covering both diffractive and refractive regions. The model-unrestricted Fourier-Bessel analysis of the 130 MeV data results in a unique solution for the underlying scattering potential. Its real central part fits very well into the systematics observed in nucleon, deuteron and alpha scattering and agrees with double folding calculations confirming the weak density-dependence of the nucleon-nucleon interaction found recently.