Searching for resonance in the unbound 6Be and 5Li nuclei

Abstract Resonances in 6 Be and 5 Li have been investigated by deuteron transfer reactions with radioactive ion beams, 2 H( 8 B,α) 6 Be, 2 H( 7 Be,α) 5 Li, respectively. There is an indication of a possible resonance at excitation energy of 9.6 MeV in 6 Be, just below the 3 He+ 3 He threshold. The structure of the 6 Li nucleus has been also investigated by the neutron transfer reaction 3 He( 7 Li,α) 6 Li. In 6 Li, a new resonance is observed at about 12.4 MeV in excitation energy and the presence of a resonance at 15.2 MeV is confirmed. The data are preliminary and a detailed analysis is in progress. The instalation of a Radioactive Ion Beam facility in Brazil (RIBRAS) is also reported.