Quenching of single-particle strength inferred from nucleon-removal transfer reactions on $^{15}$C
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866908479624577024 |
|---|---|
| author | Jiang, Y. C. Chen, J. Kay, B. P. Hoffman, C. R. Tang, T. L. Tolstukhin, I. A. Xie, M. R. Li, J. G. Michel, N. Avila, M. L. Ayyad, Y. Bazin, D. Bennett, S. Clark, J. A. Freeman, S. J. Jayatissa, H. Li, G. Liu, W. P. Lou, J. L. Munoz-Ramos, A. Müller-Gatermann, C. Nathan, T. Santiago-Gonzalez, D. Sharp, D. K. Shen, Y. P. Wuosmaa, A. H. Yuan, C. X. |
| author_facet | Jiang, Y. C. Chen, J. Kay, B. P. Hoffman, C. R. Tang, T. L. Tolstukhin, I. A. Xie, M. R. Li, J. G. Michel, N. Avila, M. L. Ayyad, Y. Bazin, D. Bennett, S. Clark, J. A. Freeman, S. J. Jayatissa, H. Li, G. Liu, W. P. Lou, J. L. Munoz-Ramos, A. Müller-Gatermann, C. Nathan, T. Santiago-Gonzalez, D. Sharp, D. K. Shen, Y. P. Wuosmaa, A. H. Yuan, C. X. |
| contents | The difference in the proton and neutron separation energies ($ΔS$) of the weakly bound $^{15}$C ground state is -19.86 MeV, an extreme value. Data from intermediate-energy heavy-ion induced (HI-induced) knockout reactions on nuclei spanning $-20\lesssimΔS\lesssim+20$ MeV, suggest that the degree to which single-particle strength is quenched, $R\mathrm{_{s}}$, has a negative correlation with $ΔS$, decreasing from unity around $-20$~MeV to around 0.2 at $+20$~MeV. For the $^{15}$C ground state ($R_s=0.96(4)$ in HI-induced knockout), contrasting results have recently been obtained via the neutron-adding transfer reaction, which reveal a value of $R_s=0.64(15)$, similar to the value observed at modest $ΔS$ and more extreme values of $ΔS$ with reaction probes other than HI knockout. In order to explore the any potential differences between $adding$ and $removing$ processes in transfer reactions at extreme $ΔS$, single-neutron removal transfer reactions on $^{15}$C were performed at 7.1MeV/u in inverse kinematics. The removal of a valence neutron in 2$s_{1/2}$ orbit using both ($p$,$d$) and ($d$,$t$) reactions shows consistent quenching factors and agrees with those from the neutron-adding reaction. The present results, which can be compared with neutron knockout reaction, suggest that correlations, represented by the quenching factor, show limited dependence on neutron-proton asymmetry under the most extreme asymmetry conditions so far achieved in transfer reactions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_03685 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quenching of single-particle strength inferred from nucleon-removal transfer reactions on $^{15}$C Jiang, Y. C. Chen, J. Kay, B. P. Hoffman, C. R. Tang, T. L. Tolstukhin, I. A. Xie, M. R. Li, J. G. Michel, N. Avila, M. L. Ayyad, Y. Bazin, D. Bennett, S. Clark, J. A. Freeman, S. J. Jayatissa, H. Li, G. Liu, W. P. Lou, J. L. Munoz-Ramos, A. Müller-Gatermann, C. Nathan, T. Santiago-Gonzalez, D. Sharp, D. K. Shen, Y. P. Wuosmaa, A. H. Yuan, C. X. Nuclear Experiment The difference in the proton and neutron separation energies ($ΔS$) of the weakly bound $^{15}$C ground state is -19.86 MeV, an extreme value. Data from intermediate-energy heavy-ion induced (HI-induced) knockout reactions on nuclei spanning $-20\lesssimΔS\lesssim+20$ MeV, suggest that the degree to which single-particle strength is quenched, $R\mathrm{_{s}}$, has a negative correlation with $ΔS$, decreasing from unity around $-20$~MeV to around 0.2 at $+20$~MeV. For the $^{15}$C ground state ($R_s=0.96(4)$ in HI-induced knockout), contrasting results have recently been obtained via the neutron-adding transfer reaction, which reveal a value of $R_s=0.64(15)$, similar to the value observed at modest $ΔS$ and more extreme values of $ΔS$ with reaction probes other than HI knockout. In order to explore the any potential differences between $adding$ and $removing$ processes in transfer reactions at extreme $ΔS$, single-neutron removal transfer reactions on $^{15}$C were performed at 7.1MeV/u in inverse kinematics. The removal of a valence neutron in 2$s_{1/2}$ orbit using both ($p$,$d$) and ($d$,$t$) reactions shows consistent quenching factors and agrees with those from the neutron-adding reaction. The present results, which can be compared with neutron knockout reaction, suggest that correlations, represented by the quenching factor, show limited dependence on neutron-proton asymmetry under the most extreme asymmetry conditions so far achieved in transfer reactions. |
| title | Quenching of single-particle strength inferred from nucleon-removal transfer reactions on $^{15}$C |
| topic | Nuclear Experiment |
| url | https://arxiv.org/abs/2506.03685 |