Nucleon-alpha potentials by Marchenko inversion and supersymmetry

The Marchenko inversion method has been employed to construct energy-independent interactions from the experimental data as well as from the inversion of the resonating group method phase shifts for the l=0 partial wave of the n+α system. Supersymmetric transformations are used to remove the Pauli forbidden state. The properties of these effective interactions are compared with those of three different phenomenological interactions. The potentials constructed in this way are well suited for cluster model calculations due to their energy independence and because they are valid for a higher-energy range than the existing phenomenological potentials. (orig.)