Elastic scattering, inelastic excitation, and 1n pick-up transfer cross sections for B10 + Sn

Abstract

The 10 B + 120 Sn reaction has been systematically studied at laboratory energies around the Coulomb barrier: ELAB = 31.5, 33.5, 35.0 and 37.5 MeV. Cross sections for the elastic scattering and some reaction processes have been measured: excitation to the 1 + state of 10 B; excitation to the 2 + and 3 − states of 120 Sn; and the 1 neutron pick up transfer 120 Sn( 10 B, 11 B) 119 Sn. Coupled Reaction Channels (CRC) calculations have been performed in the context of the double-folding São Paulo Potential. The theoretical calculations result on a good overall description of the experimental angular distributions. The effect on the theoretical elastic scattering angular distributions of couplings to the inelastic and transfer states (through the CRC calculations) and to the continuum states (through Continuum-Discretized Coupled-Channels calculations) has been investigated.

Investigation of the fusion process for B10+Au197 at near-barrier energies

“…In these conditions, a quite good theoretical description for the complete data set corresponding to the quasielastic, elastic, and inelastic scattering, and one-neutron pickup transfer, for several energies around the Coulomb barrier was obtained in [20]. Similar results have been obtained in the case of 10 B + 120 Sn [13,14].…”

“…N I = 0.30 was obtained as the value that provides the best data fit. A similar value (N I = 0.25) has been obtained for the 10 B + 120 Sn system at energies around the corresponding Coulomb barrier [13,14]. We also included a real spin-orbit potential, related to the 3 + 10 B ground state (g.s.…”

“…Although the elastic scattering represents the most direct and simplest process concerning a nuclear reaction, its description can become extremely challenging if the effect of couplings to nonelastic channels is strong. Particularly, in nuclear collisions involving weakly bound or radioactive nuclei, direct processes, such as transfer or breakup, can affect the dynamics of the reaction due to their cluster structure and low breakup energy threshold [8][9][10][11][12][13][14][15].…”

Estudo do espalhamento elástico e reações do projétil >sup<8>/sup<Li em alvos de massa leve, intermediária e pesada

“…Os parâmetros obtidos, para potencial nuclear, estão apresentados na tabela a seguir. Os resultados obtidos neste trabalho foram comparados com dados da literatura para sistemas envolvendo alvos com número de massa A≈58 [17,24,71,[76][77][78][79][80][81][82][83].…”

“…Os dados obtidos neste trabalho, foram comparados com dados da literatura obtidos para sistemas envolvendo alvos com número de massa A=120 [17,76,77,82,83].…”