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Cluster formation in neutron-rich Be and B isotopes
| Title: | Cluster formation in neutron-rich Be and B isotopes |
| Authors: | Motoki, Hideaki Browse this author | | Suzuki, Yoshiki Browse this author | | Kawai, Tsuyoshi Browse this author | | Kimura, Masaaki Browse this author |
| Issue Date: | Nov-2022 |
| Publisher: | Oxford University Press |
| Journal Title: | Progress of theoretical and experimental physics |
| Volume: | 2022 |
| Issue: | 11 |
| Start Page: | 113D01 |
| Publisher DOI: | 10.1093/ptep/ptac145 |
| Abstract: | Evaluating the formation of clusters in finite and infinite nuclear systems is a fundamental problem in nuclear physics, and the variation in clustering in the isotope chain up to the neutron drip-line is one such intriguing phenomenon. Recently, experiments performed using the (p, p alpha) reactions have revealed a negative correlation between alpha-cluster formation and neutron number in Sn isotopes, showing a trend opposite to that theoretically predicted for Be and B isotopes. Although the observed charge radii of the Be and B isotopes suggest the formation of clusters as the neutron drip-line is approached, these radii themselves arc not a physical quantity that can directly probe the cluster structure. Here, we directly investigate the cluster formation in Be and B isotopes to elucidate the possibility of clustering as the neutron drip-line is approached. It has been shown that the sum of the S-factors (i.e., S(alpha), S(He-6), and S(He-8)) increases as the neutron drip-line approaches, in agreement with those of previous studies. The results indicate that the excess neutrons contribute to the formation of He-6 and He-8 clusters as well as alpha clusters. Thus, S(alpha) is not sufficient to estimate the enhancement of clustering in Be and B isotopes. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/88908 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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