Anomalous low-energy $E2$-related behavior in triaxial nuclei
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2022
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866918107870658560 |
|---|---|
| author | Zhang, Yu He, Ying-Wen Karlsson, D. Qi, Chong Pan, Feng Draayer, J. P. |
| author_facet | Zhang, Yu He, Ying-Wen Karlsson, D. Qi, Chong Pan, Feng Draayer, J. P. |
| contents | The anomalous low-energy $E2$-related behavior of a triaxially-deformed nucleus bas been identified and analyzed based on the SU(3) algebraic theory within the framework of the interacting boson model. The results show striking features that include a $B(E2;4_1^+\rightarrow2_1^+)/B(2_1^+\rightarrow0_1^+)<1.0$ transition rate ratio and a $E(4_1^+)/E(2_1^+)>2.0$ excitation energy ratio that can be tracked back to a finite-$N$ effect, which in a large-$N$ limit of the theory yields normal results for a stable $γ$-deformation. This description is shown to be able to explain observed $E2$ anomalous phenomenon in neutron-deficient nuclei such as $^{172}$Pt and $^{168}$Os, and in so doing yields a deeper understanding of the physical features of a soft triaxially-deformed nucleus. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2207_06201 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Anomalous low-energy $E2$-related behavior in triaxial nuclei Zhang, Yu He, Ying-Wen Karlsson, D. Qi, Chong Pan, Feng Draayer, J. P. Nuclear Theory The anomalous low-energy $E2$-related behavior of a triaxially-deformed nucleus bas been identified and analyzed based on the SU(3) algebraic theory within the framework of the interacting boson model. The results show striking features that include a $B(E2;4_1^+\rightarrow2_1^+)/B(2_1^+\rightarrow0_1^+)<1.0$ transition rate ratio and a $E(4_1^+)/E(2_1^+)>2.0$ excitation energy ratio that can be tracked back to a finite-$N$ effect, which in a large-$N$ limit of the theory yields normal results for a stable $γ$-deformation. This description is shown to be able to explain observed $E2$ anomalous phenomenon in neutron-deficient nuclei such as $^{172}$Pt and $^{168}$Os, and in so doing yields a deeper understanding of the physical features of a soft triaxially-deformed nucleus. |
| title | Anomalous low-energy $E2$-related behavior in triaxial nuclei |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2207.06201 |