Systematical study of the optical potential for systems likeA+58Nifrom sub-barrier data analyses

Abstract

Elastic scattering differential cross sections were measured for the 28 Siϩ 58 Ni system at sub-barrier energies. The corresponding nuclear potential was compared with earlier results of systems like Aϩ 58 Ni. The present data also allowed the determination of the 28 Si nuclear density through an unfolding method. The experimentally extracted 28 Si density values are compared with those previously obtained for the 4,6 He, 12 C, 16,18 O nuclei. We present a critical discussion of the absolute precision obtained for the density parameters extracted from the data analyses.

Complementary optical-potential analysis of -particle elastic scattering and induced reactions at low energies

“…The full circles correspond to the target nuclei with A >89. [60] angular distributions of the elastic scattering of α-particles between 8.1 and 9.6 MeV on 58 Ni, with OMP calculations using (a) the local imaginary-potential parameters (Table 2) and semi-microscopic DF approach together with the surface-imaginary po-tential dispersive corrections formerly used within the elastic-scattering analysis (dotted curves) and corresponding to the final form of the ROP surface imaginary-potential in Table 3 (solid curves), and (b) the phenomenological parameters obtained formerly within the elastic-scattering analysis, i.e. for energies above the limit E 2 in Table 3 (dashed curves), and the final ROP (solid curves).…”

Elastic scattering and total reaction cross sections for theB8,Be7Barioni1, Zamora2, Guimarães3 et al. 2011Phys. Rev. C5011350View full textAdd to dashboardCite

“…Elastic scattering measurements at low energies (near to or above the Coulomb barrier) have been used as an effective tool to investigate the unusual features of exotic nuclei, such as extended halos or neutron skins. Particular interest has been devoted to 6 He and 8 B nuclei mainly due to the availability of low-energy radioactive beams of these elements [1][2][3][4][5][6]. The exotic structure of these light nuclei alters the elastic scattering due to competing mechanisms such as breakup and transfer reactions.…”

Consistent analysis of fusion data without adjustable parameters for a wide variety of heavy-ion systems

“…The SP potential has been successful in describing the elastic scattering and peripheral reaction 044606-2 channels for several heavy-ion systems in a very wide energy region [18,[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]. In the present work, we use the SP interaction generalized for deformed nuclei [37,38].…”

“…The analyses are performed in the context of the ZPM model and using the São Paulo (SP) potential [17][18][19] as the bare interaction. The SP potential has been successful in describing the elastic scattering and peripheral reaction channels for several systems in a wide energy region, from sub-barrier to intermediate energies [18,[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]. Therefore, the bare interaction assumed here to analyze the fusion data is also appropriate to describe the elastic scattering process.…”