Dynamics of fragment capture in 7Li + 198Pt

The process of breakup/incomplete fusion where one of the fragments after breakup of the projectile is captured by the target, has been found to be more dominant over one step transfer in case of 6Li(7Li) for deuteron (triton) capture. For well bound projectile incomplete fusion occurs only at high energies (≈ 10 MeV/A or more). In case of weakly bound clusters of 6,7Li, this is an important channel both at high energies and at energies much below the barrier. The present work is aimed at studying the process of capture/transfer for the weakly bound 4He, 3H clusters and the tightly bound heavy fragments, 5,6He of 7Li using the particle-gamma coincidences. Integrated cross-section of compound nuclear fusion, 3H and 4He-capture, required for constraining parameters of theoretical calculations, have also been measured. Results are compared quantitatively with the recently developed three-dimensional classical model of breakup fusion. The present work for the first time enabled to distinguish the influence of weakly bound and well bound cluster structures on reaction dynamics