ONE-STEP AND 2-STEP PROCESSES IN LI-6(LI-7,BE-7)HE-6 REACTION AT E(LI-7)=78 MEV

The angular distributions of the Li-6(Li-7,Be-7)He-6 reaction were mea sured at 78 MeV projectile energy for the transitions to the ground an d first excited states of He-6 and Be-7 nuclei. The experimental data were analyzed with the one-step charge-exchange and two-step nucleon t ransfer mechanisms using DWBA and coupled reaction channels methods. A satisfactory description of the experimental data was obtained with d irect charge-exchange processes at small angles and with two-step nucl eon transfers at large angles.