Coulomb and nuclear breakup of $^8$B

Details Coulomb and nuclear breakup of $^8$B Coulomb and nuclear breakup of $^8$B

1998-08-27

arxiv.org/abs/nucl-th/9808069v2

Phys.Rev. C59 (1999) 2645-2651

Physics

Nuclear Physics

Nuclear Theory

Revised version, accepted for publication in Phys. Rev.C

Scientific paper

10.1103/PhysRevC.59.2645

The cross sections for the ($^8$B,$^7$Be-$p$) breakup reaction on $^{58}$Ni and $^{208}$Pb targets at the beam energies of 25.8 MeV and 415 MeV have been calculated within a one-step prior-form distorted-wave Born approximation. The relative contributions of Coulomb and nuclear breakup of dipole and quadrupole multipolarities as well as their interference have been determined. The nuclear breakup contributions are found to be substantial in the angular distributions of the $^7$Be fragment for angles in the range of 30$^\circ$ - 80$^\circ$ at 25.8 MeV beam energy. The Coulomb-nuclear interference terms make the dipole cross section larger than that of quadrupole even at this low beam energy. However, at the incident energy of 415 MeV, these effects are almost negligible in the angular distributions of the ($^7$Be-p) coincidence cross sections at angles below 4$^\circ$.

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