Abstract
One-neutron stripping process between \(^{6}\)Li and \(^{209}\)Bi was studied at 28, 30, and 34 MeV using the in-beam \(\gamma \)-ray spectroscopy method. The \(\gamma \)–\(\gamma \) coincident analysis clearly identified two \(\gamma \)-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 \(^6\)Li+\(^{209}\)Bi 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 \(^6\)Li. The calculations indicated that the first excited state of \(^5\)Li is critical in the actual one-neutron transfer mechanism, and the valence proton of \(^{209}\textrm{Bi}\) can be excited to the low-lying excited state in (\(^{6}\textrm{Li}\),\(^{5}\textrm{Li}\)) reaction, unlike in the (d,p) reaction.
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Data availability
The data that support the findings of this study are openly available in Science Data Bank at https://cstr.cn/31253.11.sciencedb.j00186.00545 and https://doi.org/10.57760/sciencedb.j00186.00545.
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We are grateful to the INFN-LNL staff for providing a stable 6-Li beam throughout the experiment.
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by Gao-Long Zhang, Zhen-Wei Jiao, Guang-Xin Zhang and Shi-Peng Hu. The first draft of the manuscript was written by Zhen-Wei Jiao, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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This work was supported by the National Nature Science Foundation of China (Nos. U2167204, 11975040, and U1832130), the Brazilian funding agencies CAPES, CNPq, FAPERJ, and the INCT-FNA (Instituto Nacional de Ciência e Tecnologia-Física Nuclear e Aplicações), research project 464898/2014-5. S. P. Hu was supported by Guang dong Key Research And Development Program (No. 2020B040420005), Guang dong Basic and Applied Basic Research Foundation (No. 2021B1515120027), Ling Chuang Research Project of China National Nuclear Corporation (No. 20221024000072F6-0002-7), and Nuclear Energy Development and Research Project (No. HNKF202224(28)). The work was also supported by the ‘111’ center (B20065). M. Siciliano was supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under contract number DE-AC02- 06CH1135.
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Zhang, GL., Jiao, ZW., Zhang, GX. et al. One-neutron stripping process in the 209Bi(6Li, 5Li)210Bi* reaction reaction. NUCL SCI TECH 35, 104 (2024). https://doi.org/10.1007/s41365-024-01462-w
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DOI: https://doi.org/10.1007/s41365-024-01462-w