Coulomb dissociation of 8B into 7Be+p: Effects of multiphoton exchange

Physics – Nuclear Physics

Scientific paper

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Radiative Capture, 6<=A<=19

Scientific paper

Coulomb dissociation of 8B into the 7p 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 7Be(p,γ)8B reaction for the 8B 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 8B* scattering angle, the 7p relative energy, and momentum.

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