The study of 10B(d, n) 11C and 11B(d, n) 12C reactions

Abstract

The differential cross section at 0° for the reaction 10B(d, n) 11C leaving the final nucleus 11C in the ground state was measured from 3.2 to 9.0 MeV deuteron bombarding energy. The 0° excitation function is a smoothly varying function of cross section and shows no marked structure. The 0° yield curves for the reaction 11B(d, n) 12C leaving the final nucleus 12C in the ground and the first excited (4.433 MeV) state were measured from 1.1 to 2.9 MeV deuteron bombarding energy. The yield curves for both groups show resonance structures though at different deuteron bombarding energies. Ten angular distributions were measured for the reaction 10B(d, n) 11C at 3.20, 3.75, 4.50, 5.00, 5.70, 6.30, 7.00, 7.60, 8.30 and 9.00 MeV deuteron energy. The angular distributions all show a sharp peak around 20° and a smaller contribution in the backward direction. As the deuteron bombarding energy is increased, the 20° peak becomes stronger and the cross section in the backward direction decreases. In general, the shape of the angular distribution does not change with the bombarding energy. Analyses of these angular distributions were carried out using DWBA theory. It was found that even though the angular distributions vary smoothly with energy one needed to impose an energy dependence on the deuteron and proton optical potentials.