Elastic and inelastic scattering of 14.2 MeV neutrons from6Li and the optical model

The differential cross-sections for the elastic scattering of 14.2 MeV neutrons and for inelastic scattering to the first excited level heve been measured for6Li, using a time-of-flight spectrometer. The elastic and the inelastic angular distribution leading to the 2.18 MeV level were obtained; the elastic one was compared with the predictions of the optical model, using different kinds of parameters. The equivalent nonlocal optical model with parameters similar to those used for fitting medium weight and heavy nuclei gave the best fit. The derived values for the total elastic and for the inelastic to the first-excited-state cross-sections are (754±82) mb and (83±30) mb, respectively.