A study of the (6Li,7Be) reaction in the mass-90 region at 60 MeV

Abstract

Angular distributions have been measured for the reactions 90Zr(6Li,7BeGS)89Y, 90Zr(6Li,7Be0.43)89Y, 89Y(6Li,7BeGS)88Sr and 89Y(6Li,7Be0.43)88Sr at an incident beam energy of 60 MeV in the angular range 6 degrees -45 degrees (lab). Exact finite-range distorted-wave Born approximation calculations have been performed and were found to be moderately successful in reproducing the shape of the experimental angular distribution. The optical-model parameters used in the calculations were obtained from a global set of parameters which was capable of reproducing the 6Li and 7Li elastic scattering data taken at 60 MeV. In the analysis of the reaction data the 7BeGS was assumed to be a mixed state of 1p3/2 and 1p1/2 configurations, whilst the 7Be0.43 state was assumed to be due to a pure 1p3/2 configuration, in agreement with shell-model calculations and previous experimental results. Spectroscopic factors were deduced from a comparison of the theoretical and experimental cross sections. The results obtained were found to be in good agreement with those deduced from light-ion reactions.