Spectroscopic Investigation of 7Liand 7Benuclei by elastic‐transfer reactions.

The cluster structure of 7 Li and 7 Be has been investigated by the elastic‐transfer 4 He ( 7 Li , 4 He ) 7 Li and 3 He ( 7 Be , 3 He ) 7 Be reactions, respectively. Angular distribution for the elastic‐transfer of 7 Li + 4 He has been measured in Sao Paulo at E CM = 9.67 MeV . Together with available elastic‐transfer angular distributions measured at other energies ranging from E CM = 2.29 to 32.13 MeV, a global optical model analysis has been performed. The measurement of the elastic‐transfer angular distribution at E LAB = 48.2 MeV for the 7 Be + 3 He system is also described.