One-neutron stripping process in the 209Bi(6Li, 5Li)210Bi* reaction reaction

Zhang, G. -L.; Jiao, Z. -W.; Zhang, G. -X.; Cardozo, E. N.; Paes, B.; S. -P., Hu; Qian, J. -Q.; Mengoni, D.; W. -W., Qu; C. -B., Li; Zheng, Y.; Zhang, H. -Q.; Sun, H. -B.; Wang, N.; Zhang, C. -L.; Valiente-Dobon, J. J.; Testov, D.; Mazzocco, M.; Gozzelino, A.; Parascandolo, C.; Pierroutsakou, D.; La Commara, M.; Goasduff, A.; Bazzacco, D.; Napoli, D. R.; Galtarossa, F.; Recchia, F.; Illana, A.; Bakes, S.; Zanon, I.; Aydin, S.; de Angelis, G.; Siciliano, M.; Menegazzo, R.; Lenzi, S. M.; Akkoyun, S.; Canto, L. F.; Lubian, J.

doi:10.1007/s41365-024-01462-w

One-neutron stripping process between 6Li and 209Bi was studied at 28, 30, and 34 MeV using the in-beam γ-ray spectroscopy method. The γ–γ coincident analysis clearly identified two γ-rays feeding the ground and long-lived isomeric states, which were employed to determine the cross section. The one-neutron stripping cross sections were similar to the cross sections of complete fusion in the 6Li+209Bi system, but the one-neutron stripping cross sections decreased more gradually at the sub-barrier region. A coupled-reaction-channel calculation was performed to study the detailed reaction mechanism of the one-neutron stripping process in 6Li. The calculations indicated that the first excited state of 5Li is critical in the actual one-neutron transfer mechanism, and the valence proton of 209Bi can be excited to the low-lying excited state in (6Li,5Li) reaction, unlike in the (d,p) reaction.