Study of the Breakup Reaction8B7Be+p: Absorption Effects andE2Strength

Abstract
Distributions of parallel and transverse momenta for 7Be fragments formed in the breakup of 8B have been measured at 41AMeV. The p distributions are narrow ( 81±4 and 62±3MeV/c FWHM for Be and Au targets, respectively), comparable to those of neutron halo nuclei. Reaction mechanisms influence the 7Be momentum distributions, so they do not directly reflect the valence proton momentum wave function. We present reaction models that reproduce the distributions.