O17(p→,t)15O reaction at 90 MeV

Differential cross sections and analyzing powers of the O17(p→,t) reaction were measured over the angular range from 5°to 55°at Tp=89.7 MeV. The data for transitions to five residual states of O15 are compared with calculations in the finite-range and zero-range distorted-wave Born approximation. The distorting potential parameters were obtained from optical-model analyses of elastic proton and helion scattering. The (p→,t) cross sections are underpredicted by the finite-range calculations and overpredicted by zero-range calculations based on standard normalizations. The reproduction of the analyzing powers is only fair. Two-step calculations of the type (p→,d;d,t) were performed in a zero-range, second-order distorted-wave Born approximation. The ground state and six one-particle, one-hole states of O16 were taken into account as intermediate states. Consistent improvement in the prediction of the data was not obtained.