V. Guimarães

Elastic scattering and total reaction cross section for the 6He + 27Al system

Abstract The elastic scattering of the radioactive halo nucleus 6 He on 27 Al target was measured at four energies close to the Coulomb barrier using the RIBRAS (Radioactive Ion Beams in Brazil) facility. The Sao Paulo Potential (SPP) was used and its diffuseness and imaginary strength were adjusted to fit the elastic scattering angular distributions. Reaction cross-sections were extracted from the optical model fits. The reduced reaction cross-sections of 6 He on 27 Al are similar to those for stable, weakly bound projectiles as 6,7 Li, 9 Be and larger than stable, tightly bound projectile as 16 O on 27 Al.

Nuclear and Coulomb Interaction in the 8B to 7Be + p Breakup Reaction at sub-Coulomb Energies

The angular distribution for the breakup of 8B-->7Be+p on a 58Ni target has been measured at an incident energy of 25.75 MeV. The data are inconsistent with first-order theories but are remarkably well described by calculations including higher-order effects. The comparison with theory illustrates the importance of the inclusion of the exotic proton halo structure of 8B in accounting for the data.

Neutron transfer reactions induced by^{8} Li on^{9} Be

Angular distributions for the elastic scattering of

Evaluation of shot peening on the fatigue strength of anodized Ti-6Al-4V alloy

^{8}\mathrm{Li}

Astrophysical reaction rate for the Li-8(n,gamma)Li-9 reaction

on

Photofission of 232 Th and 238 U at intermediate energies

^{9}\mathrm{Be}

Radioactive ion beams in Brasil (RIBRAS)

and the neutron transfer reactions

Rearrangement of valence neutrons in the neutrinoless double-β decay of Xe136

^{9}\mathrm{Be}

Proton-induced fission on 241 Am, 238 U, and 237 Np at intermediate energies

(

Facilities and Methods: Radioactive Ion Beam Facility in Brazil (RIBRAS)

^{8}\mathrm{Li}