Analysis of elastic α-58Ni scattering in the energy region 82–699 MeV by the S-matrix model

Abstract

Elastic scattering of [Formula: see text]-particles on medium-weight nuclei [Formula: see text]Ni is analyzed in the energy range approximately from 20 to 175[Formula: see text]MeV/nucleon using the original six-parameter S-matrix model. Energy dependences of the model parameters as well as the total reaction cross-sections, nuclear rainbow angles and Fraunhofer crossover angles are studied. Behaviors of the quantum deflection function and the S-matrix modulus are investigated as well. Regular behavior of the studied quantities indicates the consistency of the model and the reliability of the obtained parameters. The results are compared to the ones obtained from the optical model. Acceptable values of [Formula: see text] obtained in calculations by the S-matrix model demonstrate the applicability of this model in the entire considered energy range.