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Impacts of hexadecapole deformations on the collective energy spectra of axially deformed nuclei
| Title: | Impacts of hexadecapole deformations on the collective energy spectra of axially deformed nuclei |
| Authors: | Lotina, L. Browse this author | | Nomura, K. Browse this author |
| Issue Date: | Mar-2024 |
| Publisher: | American Physical Society (APS) |
| Journal Title: | Physical Review C |
| Volume: | 109 |
| Issue: | 3 |
| Start Page: | 034319 |
| Publisher DOI: | 10.1103/PhysRevC.109.034304 |
| Abstract: | The hexadecapole deformation, as well as the quadrupole one, influences the low-lying states of finite nuclei. The hexadecapole correlations are often overshadowed by the large quadrupole effects, and hence have not been much investigated. Here we address the relevance of hexadecapole deformations in the calculations of low-energy collective states of heavy nuclei, by using the theoretical framework of the self-consistent mean-field method and the interacting-boson approximation. The interacting-boson Hamiltonian that explicitly includes the quadrupole and hexadecapole collective degrees of freedom is specified by a choice of the energy density functional and pairing interaction. In an illustrative application to axially deformed Gd isotopes, it is shown that the inclusion of the hexadecapole degree of freedom does not affect most of the low-spin and low-lying states qualitatively, but that has notable effects in that it significantly improves the description of high-spin states of the ground-state bands of nearly spherical vibrational nuclei and gives rise to K pi = 4+ bands exhibiting strong E4 transitions in strongly deformed nuclei. |
| Rights: | ©2024 American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/92571 |
| 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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Submitter: 野村 昂亮
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