Evolution of the nuclear spin-orbit splitting explored via the $^{32}$Si($d$,$p$)$^{33}$Si reaction using SOLARIS
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2024
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| author | Chen, J. Kay, B. P. Hoffman, C. R. Tang, T. L. Tolstukhin, I. A. Bazin, D. Lubna, R. S. Ayyad, Y. Beceiro-Novo, S. Coombes, B. J. Freeman, S. J. Gaffney, L. P. Garg, R. Jayatissa, H. Kuchera, A. N. MacGregor, P. Mitchell, A. J. Mittig, W. Monteagudo, B. Munoz-Ramos, A. Müller-Gatermann, C. Recchia, F. Rijal, N. Santamaria, C. Serikow, M. Z. Sharp, D. K. Smith, J. Stecenko, J. K. Wilson, G. L. Wuosmaa, A. H. Yuan, C. X. Zamora, J. C. Zhang, Y. N. |
| author_facet | Chen, J. Kay, B. P. Hoffman, C. R. Tang, T. L. Tolstukhin, I. A. Bazin, D. Lubna, R. S. Ayyad, Y. Beceiro-Novo, S. Coombes, B. J. Freeman, S. J. Gaffney, L. P. Garg, R. Jayatissa, H. Kuchera, A. N. MacGregor, P. Mitchell, A. J. Mittig, W. Monteagudo, B. Munoz-Ramos, A. Müller-Gatermann, C. Recchia, F. Rijal, N. Santamaria, C. Serikow, M. Z. Sharp, D. K. Smith, J. Stecenko, J. K. Wilson, G. L. Wuosmaa, A. H. Yuan, C. X. Zamora, J. C. Zhang, Y. N. |
| contents | The spin-orbit splitting between neutron 1$p$ orbitals at $^{33}$Si has been deduced using the single-neutron-adding ($d$,$p$) reaction in inverse kinematics with a beam of $^{32}$Si, a long-lived radioisotope. Reaction products were analyzed by the newly implemented SOLARIS spectrometer at the reaccelerated-beam facility at the National Superconducting Cyclotron Laboratory. The measurements show reasonable agreement with shell-model calculations that incorporate modern cross-shell interactions, but they contradict the prediction of proton density depletion based on relativistic mean-field theory. The evolution of the neutron 1$p$-shell orbitals is systematically studied using the present and existing data in the isotonic chains of $N=17$, 19, and 21. In each case, a smooth decrease in the separation of the $1p_{3/2}$-$1p_{1/2}$ orbitals is seen as the respective $p$-orbitals approach zero binding, suggesting that the finite nuclear potential strongly influences the evolution of nuclear structure in this region. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_05434 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Evolution of the nuclear spin-orbit splitting explored via the $^{32}$Si($d$,$p$)$^{33}$Si reaction using SOLARIS Chen, J. Kay, B. P. Hoffman, C. R. Tang, T. L. Tolstukhin, I. A. Bazin, D. Lubna, R. S. Ayyad, Y. Beceiro-Novo, S. Coombes, B. J. Freeman, S. J. Gaffney, L. P. Garg, R. Jayatissa, H. Kuchera, A. N. MacGregor, P. Mitchell, A. J. Mittig, W. Monteagudo, B. Munoz-Ramos, A. Müller-Gatermann, C. Recchia, F. Rijal, N. Santamaria, C. Serikow, M. Z. Sharp, D. K. Smith, J. Stecenko, J. K. Wilson, G. L. Wuosmaa, A. H. Yuan, C. X. Zamora, J. C. Zhang, Y. N. Nuclear Experiment The spin-orbit splitting between neutron 1$p$ orbitals at $^{33}$Si has been deduced using the single-neutron-adding ($d$,$p$) reaction in inverse kinematics with a beam of $^{32}$Si, a long-lived radioisotope. Reaction products were analyzed by the newly implemented SOLARIS spectrometer at the reaccelerated-beam facility at the National Superconducting Cyclotron Laboratory. The measurements show reasonable agreement with shell-model calculations that incorporate modern cross-shell interactions, but they contradict the prediction of proton density depletion based on relativistic mean-field theory. The evolution of the neutron 1$p$-shell orbitals is systematically studied using the present and existing data in the isotonic chains of $N=17$, 19, and 21. In each case, a smooth decrease in the separation of the $1p_{3/2}$-$1p_{1/2}$ orbitals is seen as the respective $p$-orbitals approach zero binding, suggesting that the finite nuclear potential strongly influences the evolution of nuclear structure in this region. |
| title | Evolution of the nuclear spin-orbit splitting explored via the $^{32}$Si($d$,$p$)$^{33}$Si reaction using SOLARIS |
| topic | Nuclear Experiment |
| url | https://arxiv.org/abs/2404.05434 |