Effective two nucleon interactions in the nuclear medium have been defined from an accurate mapping of g-matrices obtained by solving the Brueckner-Bethe-Goldstone equations for infinite nuclear matter. Such effective interactions have now been determined for protons with energies in the range 65 to 200 MeV. They have been used to specify energy dependent, complex, and nonlocal optical potentials by full folding with the ground state one-nucleon density matrix elements of nuclei. With those optical potentials, differential cross sections, analyzing powers and spin rotations for elastic scattering are predicted. Excellent results have been obtained as those predictions well reproduce observed data with no a posteriori adjustment to any of the details of the calculations. The associated relative motion wave functions have been used as the distorted waves in distorted wave approximation (DWA) studies of select inelastic scattering events with similar success. The same effective interactions were used as the transition operators in those calculations. The relevant nuclear spectroscopy for the elastic and DWA (p, p') calculations has been found from large basis shell model evaluations of nuclear structure; wave functions of which give good descriptions of form factors obtained from electron scattering. The procedure explains observed data from the radioactive beam experiments in which exotic "halo nuclei" are scattered from hydrogen targets.

Ort: Wilhelm-Klemm-Str. 9, Hörsaal 404

Zeit: 17 Uhr c.t.

Einladender: Weiguny