COULOMB DISSOCIATION OF B-8 INTO BE-7+P - EFFECTS OF MULTIPHOTON EXCHANGE

Coulomb dissociation of B-8 into the Be-7-p low energy continuum is studied theoretically in first-and second-order perturbation theories and in the sudden approximation. The summation over all intermediate continuum states in the second-order amplitude is achieved by closure, using an expansion which is valid for low excitation energies. In view of the importance of the Be-7(p,gamma)B-8 reaction for the B-8 solar neutrino problem we investigate especially the optimal conditions for possible experiments. Double as well as triple differential cross sections are calculated for 5 MeV/A, 46.5 MeV/A, and 200 MeV/A beam energy as a function of the B-8* scattering angle, the Be-7-p relative energy, and momentum.