Disentangling of incomplete fusion dynamics at low energies ≈ 4-6 MeV/A

An experiment has been performed for the measurements of forward recoil range distributions (FRRDs) of evaporation residues (ERs) using O-16 beam on the target Nd-148 to explore the incomplete fusion (ICF) dynamics at low projectile energy approximate to 4-6 MeV/A. In the present work, FRRDs of ERs Er-159,Er-158(xn), Ho-160g,Ho-159(pxn), Dy-157,Dy-155(alpha xn) and 155Tb(alpha pxn) have been measured. The measured FRRDs of ERs have been compared with their theoretical mean ranges, calculated using code SRIM. These present results obtained from FRRDs measurements show that full and partial linear momentum transfer components are involved. This indicates that the ERs populated through alpha-emission channels are not only produced via complete fusion, but also through incomplete fusion dynamics. The present analysis indicates that the incomplete fusion contribution increases with projectile energy. This increment in incomplete fusion contribution is due to the increase in breakup probability of projectile O-16 into C-12 + He-4/alpha with projectile energy.