Near- and subbarrier elastic and quasielastic scattering of the weakly boundLi6projectile onSm144

Abstract

High-precision data of backward-angle elastic and quasielastic scattering for the weakly bound 6 Li projectile on 144 Sm target at deep-sub-barrier, near-, and above-barrier energies were measured. From the deep-sub-barrier data, the surface diffuseness of the nuclear interacting potential was studied. Barrier distributions were extracted from the first derivatives of the elastic and quasielastic excitation functions. It is shown that sequential breakup through the first resonant state of the 6 Li is an important channel to be included in coupled-channels calculations, even at deep-sub-barrier energies.

Recent developments in fusion and direct reactions with weakly bound nuclei

“…11 illustrates the difference between quasi-elastic and complete fusion barrier distributions in collisions of weakly bound nuclei. Panel (a) shows the QEBD for the 6 Li + 144 Sm system, measured by Monteiro et al [95]. Panel (b) shows the CFBD obtained by Rath et al [101] for the same system.…”

“…(a) QEBD for the6 Li + 144 Sm system[95]. The curves are results of different calculations; (b) Experimental CFBD for the6 Li + 144 Sm system[101].The dotted and the solid lines are respectively the results CCFULL calculations with and without channel couplings; (c) QE and CF barrier distributions for the 6 Li + 197 Au system.…”

Probing the potential and reaction coupling effects ofLi6,7+Si28Zerva1, Pakou2, Rusek3 et al. 2010Phys. Rev. C285150View full textAdd to dashboardCite

“…A few other measurements of the elastic and quasielastic backscattering for weakly bound nuclei have been reported previously [18][19][20][21][22], but they were for heavier targets and emphasized the coupling effects rather than the energy dependence of the optical potential.…”

α+αscattering reexamined in the context of the São Paulo potential

“…The SPP was assumed in studies of different reaction channels such as elastic scattering for systems involving tightly bound (see e.g., [3,4]), weakly bound (e.g., [5,6]), and halo (e.g., [7,8]) nuclei; heavy-ion fusion of tightly bound (e.g. [9,10]), weakly bound, and exotic (e.g., [11,12]) nuclei; and inelastic scattering and transfer processes (e.g., [13,14]).…”