Dynamics of fragment capture for cluster structures of weakly bound 7Li
1 Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
2 GANIL, CEA/DSM - CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France
3 ECT* Villa Tambosi, I-38123 Villazzano, Trento, Italy
4 DNAP, Tata Institute of Fundamental Research, Mumbai 400005 India
5 Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar Kolkata 700064 India
a e-mail: email@example.com
Published online: 19 December 2013
Role of cluster structures of 7Li on reaction dynamics have been studied by performing exclusive measurements of prompt-γ rays from residues with scattered particles at energy, E/Vb = 1.6, with 198Pt target. Yields of the residues resulting after capture of t and 4,5,6He, corresponding to different excitation energies of the composite system were estimated. The results were compared with three body classical-dynamical model for breakup fusion, constrained by the measured fusion, α and t capture cross-sections. The cross-section of residues from capture of α and t agreed well with the prediction of the model showing dominance of the two step process - breakup fusion, while those from tightly bound 6He showed massive transfer to be the dominant mechanism.
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