Total fusion and inclusive alpha in ^6,7Li+²³⁸U: role of projectile breakup

We propose that the above energy dependence can also be understood by an indirect method by measuring the inclusive breakup alpha yields for the two reactions. It is known that the alpha particles produced in the reactions involving weakly bound projectiles are peaked around the beam velocity and they are mostly due to projectile breakup. That means, the inclusive breakup alpha which is linearly proportional to the projectile breakup probability should in turn be proportional to the breakup induced fission. Here, we present the results of inclusive alpha measurements and continuum discretized coupled channels (CDCC) calculations to understand the above energy dependence on fission excitation function and the effect of breakup threshold energy of ^6,7Li