Fusion of light proton-rich exotic nuclei at near-barrier energies

Details Fusion of light proton-rich exotic nuclei at near-barrier energies Fusion of light proton-rich exotic nuclei at near-barrier energies

2002-02-08

arxiv.org/abs/nucl-th/0202028v1

Int.J.Mod.Phys. E11 (2002) 491-500

Physics

Nuclear Physics

Nuclear Theory

11 pages, 3 figures, Revtex.sty

Scientific paper

10.1142/S0218301302001034

We study theoretically fusion of the light proton-rich exotic nuclei $^{17}$F and $^8$B at near-barrier energies in order to investigate the possible role of breakup processes on their fusion cross sections. To this end, coupled channel calculations are performed considering the couplings to the breakup channels of these projectiles. In case of $^{17}$F, the coupling arising out of the inelastic excitation from the ground state to the bound excited state and its couplings to the continuum have also been taken into consideration. It is found that the inelastic excitation/breakup of $^{17}$F affect the fusion cross sections very nominally even for a heavy target like Pb. On the other hand, calculations for fusion of the one-proton halo nucleus $^8$B on a Pb target show a significant suppression of the complete fusion cross section above the Coulomb barrier. This is due to the larger breakup probability of $^8$B as compared to that of $^{17}$F. However, even for $^8$B, there is little change in the complete fusion cross sections as compared to the no-coupling case at sub-barrier energies.

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