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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2504.15016 |
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| _version_ | 1866908329194815488 |
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| author | Guo, Jin-Liang Wang, Hua-Lei Xiao, Kui Zhang, Zhen-Zhen Liu, Min-Liang |
| author_facet | Guo, Jin-Liang Wang, Hua-Lei Xiao, Kui Zhang, Zhen-Zhen Liu, Min-Liang |
| contents | The high-order deformation effects in even-even $^{246,248}$No are investigated by means of pairing self-consistent Woods-Saxon-Strutinsky calculations using the potential-energy-surface (PES) approach in an extended deformation space $(β_2, β_3,β_4,β_5,β_6,β_7, β_8)$. Based on the calculated two-dimensional-projected energy maps and different potential-energy curves, we find that the highly even-order deformations have an important impact on both the fission trajectory and energy minima, while the odd-order deformations, accompanying the even-order ones, primarily affect the fission path beyond the second barrier. Relative to the light actinide nuclei, nuclear ground state changes to the superdeformed configuration but the normally-deformed minimum, as the low-energy shape isomer, may still be primarily responsible for enhancing nuclear stability and ensuring experimental accessibility in $^{246,248}$No. Our present investigation indicates the nonnegligible impact of high-order deformation effects along the fission valley and will be helpful for deepening the understandings of different deformation effects and deformation couplings in nuclei, especially in this neutron-deficient heavy-mass region. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_15016 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing high-order deformation effects in neutron-deficient nuclei $^{246,248}$No with improved potential-energy-surface calculations Guo, Jin-Liang Wang, Hua-Lei Xiao, Kui Zhang, Zhen-Zhen Liu, Min-Liang Nuclear Theory The high-order deformation effects in even-even $^{246,248}$No are investigated by means of pairing self-consistent Woods-Saxon-Strutinsky calculations using the potential-energy-surface (PES) approach in an extended deformation space $(β_2, β_3,β_4,β_5,β_6,β_7, β_8)$. Based on the calculated two-dimensional-projected energy maps and different potential-energy curves, we find that the highly even-order deformations have an important impact on both the fission trajectory and energy minima, while the odd-order deformations, accompanying the even-order ones, primarily affect the fission path beyond the second barrier. Relative to the light actinide nuclei, nuclear ground state changes to the superdeformed configuration but the normally-deformed minimum, as the low-energy shape isomer, may still be primarily responsible for enhancing nuclear stability and ensuring experimental accessibility in $^{246,248}$No. Our present investigation indicates the nonnegligible impact of high-order deformation effects along the fission valley and will be helpful for deepening the understandings of different deformation effects and deformation couplings in nuclei, especially in this neutron-deficient heavy-mass region. |
| title | Probing high-order deformation effects in neutron-deficient nuclei $^{246,248}$No with improved potential-energy-surface calculations |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2504.15016 |