Neutron-proton pairing in the N=Z radioactive fp-shell nuclei 56Ni and 52Fe probed by pair transfer
The isovector and isoscalar components of neutron-proton pairing are investigated in the N=Z unstable nuclei of the fp-shell through the two-nucleon transfer reaction (p,3He) in inverse kinematics. The combination of particle and gamma-ray detection with radioactive beams of 56Ni and 52Fe, produced...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-06-01
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| Series: | Physics Letters B |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269322001915 |
| _version_ | 1818210315919163392 |
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| author | B. Le Crom M. Assié Y. Blumenfeld J. Guillot H. Sagawa T. Suzuki M. Honma N.L. Achouri B. Bastin R. Borcea W.N. Catford E. Clément L. Cáceres M. Caamaño A. Corsi G. De France F. Delaunay N. De Séréville B. Fernandez-Dominguez M. Fisichella S. Franchoo A. Georgiadou J. Gibelin A. Gillibert F. Hammache O. Kamalou A. Knapton V. Lapoux S. Leblond A.O. Macchiavelli F.M. Marqués A. Matta L. Ménager P. Morfouace N.A. Orr J. Pancin X. Pereira-Lopez L. Perrot J. Piot E. Pollacco D. Ramos T. Roger F. Rotaru A.M. Sánchez-Benítez M. Sénoville O. Sorlin M. Stanoiu I. Stefan C. Stodel D. Suzuki J.-C. Thomas M. Vandebrouck |
| author_facet | B. Le Crom M. Assié Y. Blumenfeld J. Guillot H. Sagawa T. Suzuki M. Honma N.L. Achouri B. Bastin R. Borcea W.N. Catford E. Clément L. Cáceres M. Caamaño A. Corsi G. De France F. Delaunay N. De Séréville B. Fernandez-Dominguez M. Fisichella S. Franchoo A. Georgiadou J. Gibelin A. Gillibert F. Hammache O. Kamalou A. Knapton V. Lapoux S. Leblond A.O. Macchiavelli F.M. Marqués A. Matta L. Ménager P. Morfouace N.A. Orr J. Pancin X. Pereira-Lopez L. Perrot J. Piot E. Pollacco D. Ramos T. Roger F. Rotaru A.M. Sánchez-Benítez M. Sénoville O. Sorlin M. Stanoiu I. Stefan C. Stodel D. Suzuki J.-C. Thomas M. Vandebrouck |
| author_sort | B. Le Crom |
| collection | DOAJ |
| description | The isovector and isoscalar components of neutron-proton pairing are investigated in the N=Z unstable nuclei of the fp-shell through the two-nucleon transfer reaction (p,3He) in inverse kinematics. The combination of particle and gamma-ray detection with radioactive beams of 56Ni and 52Fe, produced by fragmentation at the GANIL/LISE facility, made it possible to carry out this study for the first time in a closed and an open-shell nucleus in the fp-shell. The transfer cross-sections for ground-state to ground-state (J=0+, T=1) and to the first (J=1+, T=0) state were extracted for both cases together with the transfer cross-section ratios σ(0+,T=1)/σ(1+,T=0). They are compared with second-order distorted-wave born approximation (DWBA) calculations. The enhancement of the ground-state to ground-state pair transfer cross-section close to mid-shell, in 52Fe, points towards a superfluid phase in the isovector channel. For the “deuteron-like” transfer, very low cross-sections to the first (J=1+, T=0) state were observed both for 56Ni(p,3He) and 52Fe(p,3He) and are related to a strong hindrance of this channel due to spin-orbit effect. No evidence for an isoscalar deuteron-like condensate is observed. |
| first_indexed | 2024-12-12T05:14:40Z |
| format | Article |
| id | doaj.art-21e4afb798e54efaba0032484d0fad4a |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-12T05:14:40Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-21e4afb798e54efaba0032484d0fad4a2022-12-22T00:36:47ZengElsevierPhysics Letters B0370-26932022-06-01829137057Neutron-proton pairing in the N=Z radioactive fp-shell nuclei 56Ni and 52Fe probed by pair transferB. Le Crom0M. Assié1Y. Blumenfeld2J. Guillot3H. Sagawa4T. Suzuki5M. Honma6N.L. Achouri7B. Bastin8R. Borcea9W.N. Catford10E. Clément11L. Cáceres12M. Caamaño13A. Corsi14G. De France15F. Delaunay16N. De Séréville17B. Fernandez-Dominguez18M. Fisichella19S. Franchoo20A. Georgiadou21J. Gibelin22A. Gillibert23F. Hammache24O. Kamalou25A. Knapton26V. Lapoux27S. Leblond28A.O. Macchiavelli29F.M. Marqués30A. Matta31L. Ménager32P. Morfouace33N.A. Orr34J. Pancin35X. Pereira-Lopez36L. Perrot37J. Piot38E. Pollacco39D. Ramos40T. Roger41F. Rotaru42A.M. Sánchez-Benítez43M. Sénoville44O. Sorlin45M. Stanoiu46I. Stefan47C. Stodel48D. Suzuki49J.-C. Thomas50M. Vandebrouck51Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, FranceUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France; Corresponding author.Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, FranceUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, FranceCenter for Mathematical Sciences, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8580, JapanDepartment of Physics, College of Humanities and Sciences, Nihon University, Sakurajosui 3-25-40, Setagaya-ku, Tokyo 156-8550, JapanCenter for Mathematical Sciences, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8580, JapanLaboratoire de Physique Corpusculaire de Caen, ENSICAEN CNRS/IN2P3, 14050 Caen, FranceGrand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, FranceHoria Hulubei National Institute of Physics and Nuclear Engineering, Magurele, RomaniaDepartment of Physics, University of Surrey, Guildford GU2 5XH, United KingdomGrand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, FranceGrand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, FranceIGFAE and Dpt. de Física de Partículas, Univ. of Santiago de Compostela, E-15758, Santiago de Compostela, SpainIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceGrand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, FranceLaboratoire de Physique Corpusculaire de Caen, ENSICAEN CNRS/IN2P3, 14050 Caen, FranceUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, FranceIGFAE and Dpt. de Física de Partículas, Univ. of Santiago de Compostela, E-15758, Santiago de Compostela, SpainLaboratori Nazionali del Sud, Instituto Nazionale di Fisica Nucleare, Catania, ItalyUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, FranceUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, FranceLaboratoire de Physique Corpusculaire de Caen, ENSICAEN CNRS/IN2P3, 14050 Caen, FranceIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, FranceGrand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, FranceDepartment of Physics, University of Surrey, Guildford GU2 5XH, United KingdomIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceLaboratoire de Physique Corpusculaire de Caen, ENSICAEN CNRS/IN2P3, 14050 Caen, FranceNuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USALaboratoire de Physique Corpusculaire de Caen, ENSICAEN CNRS/IN2P3, 14050 Caen, FranceDepartment of Physics, University of Surrey, Guildford GU2 5XH, United KingdomGrand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, FranceUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, FranceLaboratoire de Physique Corpusculaire de Caen, ENSICAEN CNRS/IN2P3, 14050 Caen, FranceGrand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, FranceLaboratoire de Physique Corpusculaire de Caen, ENSICAEN CNRS/IN2P3, 14050 Caen, France; IGFAE and Dpt. de Física de Partículas, Univ. of Santiago de Compostela, E-15758, Santiago de Compostela, SpainUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, FranceGrand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, FranceIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceIGFAE and Dpt. de Física de Partículas, Univ. of Santiago de Compostela, E-15758, Santiago de Compostela, SpainGrand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, FranceHoria Hulubei National Institute of Physics and Nuclear Engineering, Magurele, RomaniaNuclear Physics Center, University of Lisbon, P-1649-003 Lisbon, PortugalIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceGrand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, FranceHoria Hulubei National Institute of Physics and Nuclear Engineering, Magurele, RomaniaUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, FranceGrand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, FranceUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, FranceGrand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, FranceGrand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, FranceThe isovector and isoscalar components of neutron-proton pairing are investigated in the N=Z unstable nuclei of the fp-shell through the two-nucleon transfer reaction (p,3He) in inverse kinematics. The combination of particle and gamma-ray detection with radioactive beams of 56Ni and 52Fe, produced by fragmentation at the GANIL/LISE facility, made it possible to carry out this study for the first time in a closed and an open-shell nucleus in the fp-shell. The transfer cross-sections for ground-state to ground-state (J=0+, T=1) and to the first (J=1+, T=0) state were extracted for both cases together with the transfer cross-section ratios σ(0+,T=1)/σ(1+,T=0). They are compared with second-order distorted-wave born approximation (DWBA) calculations. The enhancement of the ground-state to ground-state pair transfer cross-section close to mid-shell, in 52Fe, points towards a superfluid phase in the isovector channel. For the “deuteron-like” transfer, very low cross-sections to the first (J=1+, T=0) state were observed both for 56Ni(p,3He) and 52Fe(p,3He) and are related to a strong hindrance of this channel due to spin-orbit effect. No evidence for an isoscalar deuteron-like condensate is observed.http://www.sciencedirect.com/science/article/pii/S0370269322001915Radioactive beamDirect reactionsNeutron-proton pairingCooper pairs |
| spellingShingle | B. Le Crom M. Assié Y. Blumenfeld J. Guillot H. Sagawa T. Suzuki M. Honma N.L. Achouri B. Bastin R. Borcea W.N. Catford E. Clément L. Cáceres M. Caamaño A. Corsi G. De France F. Delaunay N. De Séréville B. Fernandez-Dominguez M. Fisichella S. Franchoo A. Georgiadou J. Gibelin A. Gillibert F. Hammache O. Kamalou A. Knapton V. Lapoux S. Leblond A.O. Macchiavelli F.M. Marqués A. Matta L. Ménager P. Morfouace N.A. Orr J. Pancin X. Pereira-Lopez L. Perrot J. Piot E. Pollacco D. Ramos T. Roger F. Rotaru A.M. Sánchez-Benítez M. Sénoville O. Sorlin M. Stanoiu I. Stefan C. Stodel D. Suzuki J.-C. Thomas M. Vandebrouck Neutron-proton pairing in the N=Z radioactive fp-shell nuclei 56Ni and 52Fe probed by pair transfer Physics Letters B Radioactive beam Direct reactions Neutron-proton pairing Cooper pairs |
| title | Neutron-proton pairing in the N=Z radioactive fp-shell nuclei 56Ni and 52Fe probed by pair transfer |
| title_full | Neutron-proton pairing in the N=Z radioactive fp-shell nuclei 56Ni and 52Fe probed by pair transfer |
| title_fullStr | Neutron-proton pairing in the N=Z radioactive fp-shell nuclei 56Ni and 52Fe probed by pair transfer |
| title_full_unstemmed | Neutron-proton pairing in the N=Z radioactive fp-shell nuclei 56Ni and 52Fe probed by pair transfer |
| title_short | Neutron-proton pairing in the N=Z radioactive fp-shell nuclei 56Ni and 52Fe probed by pair transfer |
| title_sort | neutron proton pairing in the n z radioactive fp shell nuclei 56ni and 52fe probed by pair transfer |
| topic | Radioactive beam Direct reactions Neutron-proton pairing Cooper pairs |
| url | http://www.sciencedirect.com/science/article/pii/S0370269322001915 |
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