ar X iv : n uc l - th / 9 80 20 08 v 1 3 F eb 1 99 8 Nuclear breakup of 8 B in a direct fragmentation model ∗
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چکیده
We calculate the cross sections of the elastic and inelastic breakup modes for the inclusive breakup reaction 28 Si(8 B, 7 Be) at beam energies between 10-40 MeV/nucleon within a direct fragmentation model formulated in the framework of the post form distorted-wave Born-approximation. In contrast to the case of the stable isotopes, the inelastic breakup mode is found to contribute only up to 30% to the total breakup cross section, which is in agreement with the recently measured experimental data. However, the high energy tail of the energy spectra of 7 Be fragment is dominated by the inelastic breakup mode. The breakup amplitude is found to be dominated by contributions from distances well beyond the nuclear surface.
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تاریخ انتشار 1998