Probing sd-fp cross-shell interactions via terminating configurations in Sc42,43

An experimental study of the lower fp-shell nuclei Sc42,43 was performed via αpn and αp evaporation, respectively, from Ne20 + Si28 and Mg24 + Mg24 fusion-evaporation reactions. The experiments were conducted with the Gammasphere and Microball detector arrays. The level schemes of both nuclei have been extended considerably. Terminating states associated with the f7/2n and d3/2-1f7/2n+1 configurations were identified in each nuclide and incorporated into detailed comparisons with neighboring nuclei and with shell model calculations. The energy differences between the terminating states provide a test of the sd-fp cross-shell interactions in these calculations.