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Erosion of N=28 shell closure : Shape coexistence and monopole transition
| Title: | Erosion of N=28 shell closure : Shape coexistence and monopole transition |
| Authors: | Suzuki, Y. Browse this author | | Horiuchi, W. Browse this author | | Kimura, M. Browse this author →KAKEN DB |
| Issue Date: | Jun-2022 |
| Publisher: | Oxford University Press |
| Journal Title: | Progress of theoretical and experimental physics |
| Volume: | 2022 |
| Issue: | 6 |
| Start Page: | 063D02 |
| Publisher DOI: | 10.1093/ptep/ptac071 |
| Abstract: | In neutron-rich nuclei neighboring Si-42, the quenching of the N = 28 shell gap occurs and is expected to induce shape coexistence in their excitation spectra. We have applied the theoretical framework of antisymmetrized molecular dynamics with the Gogny D1S density functional to describe the shape coexistence in the N = 28 isotones Mg-40, Si-42, and S-44. We show that different nuclear shapes coexist in these nuclei: Rigid shapes with different deformations coexist in Mg-40 and Si-42, while S-44 exhibits large-amplitude collective motion and does not have any particular shape. These characteristics are reflected well in the monopole transition strengths that can be utilized as a probe for the shape coexistence. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/86474 |
| 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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