Studies of (α, d) Reactions on N=28 Nuclei. I. ⁵¹V(α, d)⁵³Cr

Abstract

Angular distributions of deuterons to 13 levels in ⁵³Cr were measured up to 3.72 MeV of excitation energy using 22 MeV alpha particles. The angular distributions are compared with the zero-range DWBA calculations employing the explicit wave functions for the ⁵³Cr states given by a shell model calculation. The ⁵³Cr states above E_x=1.28 MeV which are only weakly excited by one-nucleon transfer reactions are found to be rather strongly excited. They are assigned as the states of which main configuration corresponds to the coupling of one neutron outside the N=28 core with the J^π≠0⁺ protons. An attempt is made to determine the absolute normalization constant for the (α, d) cross sections and the value D₀²∼10⁶ MeV² fm³ is obtained.