Understanding the mechanisms of nuclear collisions: A complete study of the B10+Sn120 reaction

Abstract

Background: Reactions involving exotic and stable weakly bound nuclei have been extensively studied in recent years. Although several models have been successfully used to explain particular reaction outcomes, the answers to many questions remain elusive. In previous works, we presented elastic, inelastic, and transfer angular distributions for the 10 B + 120 Sn system measured at E Lab = 31.5, 33.0, 35.0, and 37.5 MeV. The data set was analyzed through coupled reaction channels calculations in the context of the double-folding São Paulo potential. Purpose: We investigate nuclear reaction mechanisms for systems involving weakly bound projectiles. Method: Angular distributions for several nuclear reaction processes were measured for the 10 B + 120 Sn system at E Lab = 39.70 MeV. Results:The new data set involves angular distributions for elastic scattering, projectile and target inelastic excitations, one-neutron pickup transfer, one-proton stripping transfer, deuteron pickup transfer, and 3,4 He stripping transfer. We have also observed 10 Be nuclei. The effect of the couplings to some nonelastic states on the angular distributions is discussed. Conclusion:The theoretical calculations within the coupled reaction channels formalism provide an overall good agreement with the corresponding inelastic, one-neutron stripping, one-proton pickup, one-deuteron pickup, and 3 He stripping transfer data. However, to improve the description of the elastic scattering angular distribution, the inclusion of additional channels in the coupling scheme might be necessary.

Coulomb and nuclear interactions in the dynamics of weakly-bound neutron-halo breakup on heavy target *

“…Here, the projectile-target optical potential is given by the sum of the core-target , , and neutron-target interactions, in which the coordinates (for the projectile 10 Be-n, and the target, 208 Pb), are expressed by , and . Both ct and nt interactions are given by optical potentials that contain real and imaginary parts, i.e., and .…”

“…Table 1. Woods-Saxon form-factor parameters for the projectile-target two-body interactions Pb (6), where n, 11 Be, 10 Be is identified in the first column. For simplicity, the labels " ", " " and " " are dropped.…”

“…Concerning related investigations in the last few years, we exemplify with those reported in Refs. [10][11][12][13][14][15][16][17][18][19][20][21], from which other relevant references can be obtained.…”

Description of elastic scattering for 7Li-induced reactions on 1p-shell nuclei*

“…At present, there is great interest in exploring nuclear interactions for the reactions involving weakly bound stable nuclei. This is a natural step toward a deeper understanding of the exotic nuclei at the interface between the cases of tightly bound stable and exotic nuclei [1]. Therefore, investigation of heavy-ion reactions involving weakly bound nuclei represents one of the leading research subjects in low energy nuclear physics, and is important for exploring the properties of radioactive nuclei [2].…”