Inclusive α-production cross section for the 6Li+90Zr system at energies near the fusion barrier

Inclusive (direct+compound) α production for the 6Li+90Zr system is measured at near barrier energies, namely, 15,17,19,21,25, and 30 MeV. The data are treated in the statistical model and distorted-wave Born approximation framework to disentangle the degree of competition between direct and compound reaction channels. A substantial contribution from the compound reaction channels is obtained but the direct reaction channels are found to be the dominant mechanism for α production at these energies. Estimation of the breakup and transfer reaction around the barrier shows that the latter is the dominant channel. Universal behavior of the α-production cross section is observed over a large range of target nuclei.