Quenching of single-particle strength inferred from nucleon-removal transfer reactions on 15C
The difference in the proton and neutron separation energies (ΔS) of the weakly bound 15C ground state is -19.86 MeV, an extreme value. Data from intermediate-energy heavy-ion induced (HI-induced) knockout reactions on nuclei spanning −20≲ΔS≲+20 MeV, suggest that the degree to which single-particle...
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2025-09-01
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| author | Y.C. Jiang J. Chen B.P. Kay C.R. Hoffman T.L. Tang I.A. Tolstukhin M.R. Xie J.G. Li N. Michel M.L. Avila Y. Ayyad D. Bazin S. Bennett J.A. Clark S.J. Freeman H. Jayatissa G. Li W.P. Liu J.L. Lou A. Munoz-Ramos C. Müller-Gatermann T. Nathan D. Santiago-Gonzalez D.K. Sharp Y.P. Shen A.H. Wuosmaa C.X. Yuan |
| author_facet | Y.C. Jiang J. Chen B.P. Kay C.R. Hoffman T.L. Tang I.A. Tolstukhin M.R. Xie J.G. Li N. Michel M.L. Avila Y. Ayyad D. Bazin S. Bennett J.A. Clark S.J. Freeman H. Jayatissa G. Li W.P. Liu J.L. Lou A. Munoz-Ramos C. Müller-Gatermann T. Nathan D. Santiago-Gonzalez D.K. Sharp Y.P. Shen A.H. Wuosmaa C.X. Yuan |
| author_sort | Y.C. Jiang |
| collection | DOAJ |
| description | The difference in the proton and neutron separation energies (ΔS) of the weakly bound 15C ground state is -19.86 MeV, an extreme value. Data from intermediate-energy heavy-ion induced (HI-induced) knockout reactions on nuclei spanning −20≲ΔS≲+20 MeV, suggest that the degree to which single-particle strength is quenched, Rs, has a negative correlation with ΔS, decreasing from unity around −20 MeV to around 0.2 at +20 MeV. For the 15C ground state (Rs=0.96(4) in HI-induced knockout), contrasting results have recently been obtained via the neutron-adding transfer reaction, which reveal a value of Rs=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 15C were performed at 7.1 MeV/u in inverse kinematics. The removal of a valence neutron in 2s1/2 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 | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2025-09-01 |
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| series | Physics Letters B |
| spelling | doaj-art-e9af65a3dedd45ddb8b811f3e8ccca6b2025-08-20T03:40:45ZengElsevierPhysics Letters B0370-26932025-09-0186813978910.1016/j.physletb.2025.139789Quenching of single-particle strength inferred from nucleon-removal transfer reactions on 15CY.C. Jiang0J. Chen1B.P. Kay2C.R. Hoffman3T.L. Tang4I.A. Tolstukhin5M.R. Xie6J.G. Li7N. Michel8M.L. Avila9Y. Ayyad10D. Bazin11S. Bennett12J.A. Clark13S.J. Freeman14H. Jayatissa15G. Li16W.P. Liu17J.L. Lou18A. Munoz-Ramos19C. Müller-Gatermann20T. Nathan21D. Santiago-Gonzalez22D.K. Sharp23Y.P. Shen24A.H. Wuosmaa25C.X. Yuan26Department of Physics, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China; China Institute of Atomic Energy, Beijing, 102413, ChinaCorresponding author.; Department of Physics, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China; Physics Division, Argonne National Laboratory, Lemont, 60439, IL, USAPhysics Division, Argonne National Laboratory, Lemont, 60439, IL, USAPhysics Division, Argonne National Laboratory, Lemont, 60439, IL, USAPhysics Division, Argonne National Laboratory, Lemont, 60439, IL, USAPhysics Division, Argonne National Laboratory, Lemont, 60439, IL, USAInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, Gansu, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, Gansu, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, Gansu, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, ChinaPhysics Division, Argonne National Laboratory, Lemont, 60439, IL, USAIGFAE, Universidade de Santiago de Compostela, Santiago de Compostela, E-15782, SpainFacility for Rare Isotope Beams, Michigan State University, East Lansing, 48824, MI, USADepartment of Physics, University of Manchester, Manchester, M13 9PL, United KingdomPhysics Division, Argonne National Laboratory, Lemont, 60439, IL, USADepartment of Physics, University of Manchester, Manchester, M13 9PL, United Kingdom; EP Department, CERN, Geneva, CH-1211, SwitzerlandPhysics Division, Argonne National Laboratory, Lemont, 60439, IL, USASchool of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, 100871, ChinaDepartment of Physics, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China; China Institute of Atomic Energy, Beijing, 102413, ChinaSchool of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, 100871, ChinaIGFAE, Universidade de Santiago de Compostela, Santiago de Compostela, E-15782, SpainPhysics Division, Argonne National Laboratory, Lemont, 60439, IL, USAFacility for Rare Isotope Beams, Michigan State University, East Lansing, 48824, MI, USAPhysics Division, Argonne National Laboratory, Lemont, 60439, IL, USADepartment of Physics, University of Manchester, Manchester, M13 9PL, United KingdomChina Institute of Atomic Energy, Beijing, 102413, ChinaDepartment of Physics, University of Connecticut, Storrs, 06269, CT, USASino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai, 519082, Guangdong, ChinaThe difference in the proton and neutron separation energies (ΔS) of the weakly bound 15C ground state is -19.86 MeV, an extreme value. Data from intermediate-energy heavy-ion induced (HI-induced) knockout reactions on nuclei spanning −20≲ΔS≲+20 MeV, suggest that the degree to which single-particle strength is quenched, Rs, has a negative correlation with ΔS, decreasing from unity around −20 MeV to around 0.2 at +20 MeV. For the 15C ground state (Rs=0.96(4) in HI-induced knockout), contrasting results have recently been obtained via the neutron-adding transfer reaction, which reveal a value of Rs=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 15C were performed at 7.1 MeV/u in inverse kinematics. The removal of a valence neutron in 2s1/2 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.http://www.sciencedirect.com/science/article/pii/S0370269325005507Spectroscopic factorQuenching factorTransfer reactionSingle-particle strengthShell model |
| spellingShingle | Y.C. Jiang J. Chen B.P. Kay C.R. Hoffman T.L. Tang I.A. Tolstukhin M.R. Xie J.G. Li N. Michel M.L. Avila Y. Ayyad D. Bazin S. Bennett J.A. Clark S.J. Freeman H. Jayatissa G. Li W.P. Liu J.L. Lou A. Munoz-Ramos C. Müller-Gatermann T. Nathan D. Santiago-Gonzalez D.K. Sharp Y.P. Shen A.H. Wuosmaa C.X. Yuan Quenching of single-particle strength inferred from nucleon-removal transfer reactions on 15C Physics Letters B Spectroscopic factor Quenching factor Transfer reaction Single-particle strength Shell model |
| title | Quenching of single-particle strength inferred from nucleon-removal transfer reactions on 15C |
| title_full | Quenching of single-particle strength inferred from nucleon-removal transfer reactions on 15C |
| title_fullStr | Quenching of single-particle strength inferred from nucleon-removal transfer reactions on 15C |
| title_full_unstemmed | Quenching of single-particle strength inferred from nucleon-removal transfer reactions on 15C |
| title_short | Quenching of single-particle strength inferred from nucleon-removal transfer reactions on 15C |
| title_sort | quenching of single particle strength inferred from nucleon removal transfer reactions on 15c |
| topic | Spectroscopic factor Quenching factor Transfer reaction Single-particle strength Shell model |
| url | http://www.sciencedirect.com/science/article/pii/S0370269325005507 |
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