Octupole correlations in superdeformed bands of $^{56}$Ni
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Acceso en línea: | |
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| _version_ | 1866909485892632576 |
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| author | Lu, Xiao Jain, Shivani Sagawa, Hiroyuki Zhou, Shan-Gui |
| author_facet | Lu, Xiao Jain, Shivani Sagawa, Hiroyuki Zhou, Shan-Gui |
| contents | The projected multi-dimensionally-constrained relativistic Hartree-Bogoliubov model was employed to calculate the potential energy surface of the high-spin states in $^{56}\text{Ni}$. It is pointed out for the first time that possible octupole deformations exist for the positive and negative parity superdeformed bands in $^{56}\text{Ni}$, with deformations $β_{30}\sim0.14$ and $β_{30}\sim0.24$, respectively, along with a large prolate deformation of $β_{20}\sim 0.42$. These octupole deformations are induced by the coupling between $2p_{3/2}$ and $1g_{9/2}$ orbits at the deformation $β_{20}\sim 0.4$. The calculated excitation energies of the two rotational bands are consistent with the observed superdeformed bands of $^{56}\text{Ni}$. In addition, two rotational bands are predicted, consisting of one superdeformed band with negative parity and one hyperdeformed bands with positive parity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_06184 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Octupole correlations in superdeformed bands of $^{56}$Ni Lu, Xiao Jain, Shivani Sagawa, Hiroyuki Zhou, Shan-Gui Nuclear Theory The projected multi-dimensionally-constrained relativistic Hartree-Bogoliubov model was employed to calculate the potential energy surface of the high-spin states in $^{56}\text{Ni}$. It is pointed out for the first time that possible octupole deformations exist for the positive and negative parity superdeformed bands in $^{56}\text{Ni}$, with deformations $β_{30}\sim0.14$ and $β_{30}\sim0.24$, respectively, along with a large prolate deformation of $β_{20}\sim 0.42$. These octupole deformations are induced by the coupling between $2p_{3/2}$ and $1g_{9/2}$ orbits at the deformation $β_{20}\sim 0.4$. The calculated excitation energies of the two rotational bands are consistent with the observed superdeformed bands of $^{56}\text{Ni}$. In addition, two rotational bands are predicted, consisting of one superdeformed band with negative parity and one hyperdeformed bands with positive parity. |
| title | Octupole correlations in superdeformed bands of $^{56}$Ni |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2502.06184 |