Fusion of the 6Li+120Sn and 7Li+119Sn and the role of neutron transfer and breakup processes

International Symposium on Entrance Channel Effect on the Reaction Mechanism in Heavy Ion Collisions

Fisichella, M.^1 ; Shotter, A.C.^2 ; Pietro, A. Di^1 ; Figuera, P.^1 ; Lattuada, M.^1,3 ; Musumarra, A.^1,3 ; Pellegriti, M.G.^1,3 ; Ruiz, C.^4 ; Scuderi, V.^1,3 ; Strano, E.^1,3 ; Torresi, D.^1,3 ; Zadro, M.^5

INFN-Laboratori Nazionali Del Sud, via S.Sofia 62, I-95125 Catania, Italy^1

School of Physics and Astronomy, JCMB, Mayfield Road, Edinburgh EH9 3JZ, United Kingdom^2

Dipartimento di Fisica Ed Astronomia, via S.Sofia 64, I-95125 Catania, Italy^3

TRIUMF, 4004 Wesbrook Mall, Vancouver BC V6T 2A3, Canada^4

Ruder Bokovic´ Institute, Bijenika cesta 54, HR-10000 Zagreb, Croatia^5

关键词: Activation techniques;    Beam energies;    Coulomb barrier;    Excitation function;    Fusion model;    Q-values;    Weakly bound nucleus;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/515/1/012006/pdf
DOI  :  10.1088/1742-6596/515/1/012006

来源: IOP

【 摘 要 】

Excitation functions have been measured for the fusion of the weakly bound nuclei6Li and7Li respectively with120Sn and119Sn at energies around the Coulomb barrier by using an activation technique. With such a study we aim to investigate the role played by direct processes as neutron transfer and breakup on fusion. At energies above the barrier, the complete fusion cross section are lower than those predicted by fusion models. This suppression is independent of beam energy and is in agreement with the values reported in literature for heavier systems. At energies below the barrier, no significant enhancement due to the positive Q-value for one and two neutron transfer for the7Li+119Sn system is observed as compared with the6Li+120Sn.