Axial shape asymmetry and high-spin states in nuclei with Z=100 suggested by the projected total energy surface approach
文献类型：期刊论文
| 作者 | Ya, Tu; Chen, Yong-Jing; Chen, Yong-Shou; Gao, Zao-Chun; Liu, Ling |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2021 |
| 卷号 | 104期号:1页码:14306 |
| ISSN号 | 2469-9985 |
| 关键词 | SPECTROSCOPY DEFORMATION |
| DOI | 10.1103/PhysRevC.104.014306 |
| 英文摘要 | The axial-shape asymmetry of yrast states in Fm246-256 is studied by performing the projected total-energy surface (PTES) calculations, which consider the beyond-mean-field effects associated with the restoration of rotational symmetry and shape variation at the same time. The results show a large elongation deformation but also a considerable large triaxiality for their ground and high spin states, the triaxial deformation gamma approximate to 11 degrees in average. In comparison, the TRS calculations have also been performed for these nuclei, and the results show a well-established axial quadrupole shape in their ground states. The presence of the significant triaxial deformation can be attributed to the beyond-mean-field effects generated by the angular-momentum projection. The axial asymmetric shape for the yrast states of nuclei with Z = 100, suggested by the present variation after projection (VAP) calculations, indicates that the triaxial degree of freedom may also play a significant role in other transfermium and even superheavy nuclei. The present PTES calculations have well reproduced the available experimental energies of the ground-band states and predict the rest yrast states up to spin 30 in each nucleus. The calculated yrast bands of Fm246-256 present the back bending phenomenon at about the state 18+, caused by the alignment excitations of the two quasiparticle neutrons of nu j(15/2)[743]7/2 or of nu h(11/2)[761]1/2. It is worth confirming the predicted band structures by the future spectroscopic experiments in the transfermium nuclei for the study of the single-particle structure in the superheavy mass region. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27272]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Shenyang Normal Univ, Sch Phys Sci & Technol, Shenyang 110034, Peoples R China 2.China Inst Atom Energy, China Nucl Data Ctr, Beijing 102413, Peoples R China 3.China Inst Atom Energy, Beijing 102413, Peoples R China 4.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ya, Tu,Chen, Yong-Jing,Chen, Yong-Shou,et al. Axial shape asymmetry and high-spin states in nuclei with Z=100 suggested by the projected total energy surface approach[J]. PHYSICAL REVIEW C,2021,104(1):14306. |
| APA | Ya, Tu,Chen, Yong-Jing,Chen, Yong-Shou,Gao, Zao-Chun,&Liu, Ling.(2021).Axial shape asymmetry and high-spin states in nuclei with Z=100 suggested by the projected total energy surface approach.PHYSICAL REVIEW C,104(1),14306. |
| MLA | Ya, Tu,et al."Axial shape asymmetry and high-spin states in nuclei with Z=100 suggested by the projected total energy surface approach".PHYSICAL REVIEW C 104.1(2021):14306. |
入库方式： OAI收割
来源：理论物理研究所
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