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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2601.22234 |
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| _version_ | 1866914292899512320 |
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| author | Anh, Nguyen Le Andrews, Jasmine Sarahi Loc, Bui Minh Sieverding, Andre |
| author_facet | Anh, Nguyen Le Andrews, Jasmine Sarahi Loc, Bui Minh Sieverding, Andre |
| contents | The neutron radiative capture reaction $^{17}$O(n,$γ$)18O plays a pivotal role in both nuclear structure studies and astrophysical nucleosynthesis, particularly in the formation of elements during hydrostatic and explosive stellar environments. We calculated the $^{17}$O(n,$γ$)$^{18}$O cross section within the Skyrme Hartree-Fock potential model and analyzed electric dipole E1 transitions to both positive and negative-parity states below the alpha-decay threshold in $^{18}$O. Our cross sections are significantly different from the data available in commonly used libraries. We further investigate the impact of the new calculated cross section on weak r-process nucleosynthesis using large-scale reaction network calculations across a wide range of electron fractions and entropies. Our results show that the $^{17}$O(n, $γ$)$^{18}$O reaction rate significantly influences the production of first r-process peak elements, such as strontium, under specific astrophysical conditions. This study highlights the importance of accurate nuclear dat$ for light isotopes in modeling heavy-element synthesis and provides updated reaction rates for future nucleosynthesis simulations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_22234 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Low-energy 17O(n,g)18O reaction within the microscopic potential model and its role for the weak r-process Anh, Nguyen Le Andrews, Jasmine Sarahi Loc, Bui Minh Sieverding, Andre Nuclear Theory The neutron radiative capture reaction $^{17}$O(n,$γ$)18O plays a pivotal role in both nuclear structure studies and astrophysical nucleosynthesis, particularly in the formation of elements during hydrostatic and explosive stellar environments. We calculated the $^{17}$O(n,$γ$)$^{18}$O cross section within the Skyrme Hartree-Fock potential model and analyzed electric dipole E1 transitions to both positive and negative-parity states below the alpha-decay threshold in $^{18}$O. Our cross sections are significantly different from the data available in commonly used libraries. We further investigate the impact of the new calculated cross section on weak r-process nucleosynthesis using large-scale reaction network calculations across a wide range of electron fractions and entropies. Our results show that the $^{17}$O(n, $γ$)$^{18}$O reaction rate significantly influences the production of first r-process peak elements, such as strontium, under specific astrophysical conditions. This study highlights the importance of accurate nuclear dat$ for light isotopes in modeling heavy-element synthesis and provides updated reaction rates for future nucleosynthesis simulations. |
| title | Low-energy 17O(n,g)18O reaction within the microscopic potential model and its role for the weak r-process |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2601.22234 |