Reexamination of the N = 50 and Z = 28 shell closure

Recent experiments performed in neutron-rich copper isotopes have revealed a crossing in the nucleus Cu75 between the 3/2− and 5/2− levels, which correspond to the ground state and the first excited state in isotopes with mass number below A = 75. Due to the strong single-particle character of these...

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Published in:Physical Review C
Main Authors: Routray, T. R., Bano, P., Anguiano, M., Centelles, M., Viñas, X., Robledo Martín, Luis Miguel
Other Authors: UAM. Departamento de Física Teórica
Format: Article in Journal/Newspaper
Language:English
Published: American Physical Society 2022
Subjects:
Online Access:http://hdl.handle.net/10486/705415
https://doi.org/10.1103/PhysRevC.104.L011302
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spelling ftuamadrid:oai:repositorio.uam.es:10486/705415 2023-07-02T03:33:39+02:00 Reexamination of the N = 50 and Z = 28 shell closure Routray, T. R. Bano, P. Anguiano, M. Centelles, M. Viñas, X. Robledo Martín, Luis Miguel UAM. Departamento de Física Teórica 2022-11-29T13:11:00Z application/pdf http://hdl.handle.net/10486/705415 https://doi.org/10.1103/PhysRevC.104.L011302 eng eng American Physical Society Physical Review C: Nuclear Physics https://doi.org/10.1103/PhysRevC.104.L011302 Gobierno de España. FIS2017-87534-P Gobierno de España. CEX2019-000918- M Gobierno de España. PGC2018-094583-B-I00 Gobierno de España. PID2019-104888GB-I00 Physical Review C 104.1 (2021): L011302 2469-9985 (print) 2469-9993 (online) http://hdl.handle.net/10486/705415 doi:10.1103/PhysRevC.104.L011302 L011302-1 1 L011302--6 104 © 2021 American Physical Society openAccess Bogoliubov Theory Nuclear Properties Isotopes Física article info:eu-repo/semantics/publishedVersion 2022 ftuamadrid https://doi.org/10.1103/PhysRevC.104.L011302 2023-06-13T23:14:15Z Recent experiments performed in neutron-rich copper isotopes have revealed a crossing in the nucleus Cu75 between the 3/2− and 5/2− levels, which correspond to the ground state and the first excited state in isotopes with mass number below A = 75. Due to the strong single-particle character of these states, this scenario can be investigated through the analysis of the proton spectrum provided by mean-field models in nickel isotopes with neutron numbers between N = 40 and N = 50. In this work, we show that the aforementioned crossing is mainly driven by the mean field provided by the effective nucleon-nucleon and spin-orbit interactions. We also analyze the impact of the tensor interaction and find that in some mean-field models it is essential to reproduce the crossing of the 2p3/2 and 1 f5/2 proton single-particle levels, as in the case of the SAMi-T Skyrme force and the D1M Gogny interaction, whereas in other cases, as for example the SLy5 Skyrme force, a reasonable tensor force appears to be unable to modify the mean-field enough to reproduce this level crossing. Finally, in the calculations performed with the so-called simple effective interaction (SEI), it is shown that the experimental data in nickel and copper isotopes considered in this work can be explained satisfactorily without any explicit consideration of the tensor interaction Article in Journal/Newspaper sami Universidad Autónoma de Madrid (UAM): Biblos-e Archivo Physical Review C 104 1
institution Open Polar
collection Universidad Autónoma de Madrid (UAM): Biblos-e Archivo
op_collection_id ftuamadrid
language English
topic Bogoliubov Theory
Nuclear Properties
Isotopes
Física
spellingShingle Bogoliubov Theory
Nuclear Properties
Isotopes
Física
Routray, T. R.
Bano, P.
Anguiano, M.
Centelles, M.
Viñas, X.
Robledo Martín, Luis Miguel
Reexamination of the N = 50 and Z = 28 shell closure
topic_facet Bogoliubov Theory
Nuclear Properties
Isotopes
Física
description Recent experiments performed in neutron-rich copper isotopes have revealed a crossing in the nucleus Cu75 between the 3/2− and 5/2− levels, which correspond to the ground state and the first excited state in isotopes with mass number below A = 75. Due to the strong single-particle character of these states, this scenario can be investigated through the analysis of the proton spectrum provided by mean-field models in nickel isotopes with neutron numbers between N = 40 and N = 50. In this work, we show that the aforementioned crossing is mainly driven by the mean field provided by the effective nucleon-nucleon and spin-orbit interactions. We also analyze the impact of the tensor interaction and find that in some mean-field models it is essential to reproduce the crossing of the 2p3/2 and 1 f5/2 proton single-particle levels, as in the case of the SAMi-T Skyrme force and the D1M Gogny interaction, whereas in other cases, as for example the SLy5 Skyrme force, a reasonable tensor force appears to be unable to modify the mean-field enough to reproduce this level crossing. Finally, in the calculations performed with the so-called simple effective interaction (SEI), it is shown that the experimental data in nickel and copper isotopes considered in this work can be explained satisfactorily without any explicit consideration of the tensor interaction
author2 UAM. Departamento de Física Teórica
format Article in Journal/Newspaper
author Routray, T. R.
Bano, P.
Anguiano, M.
Centelles, M.
Viñas, X.
Robledo Martín, Luis Miguel
author_facet Routray, T. R.
Bano, P.
Anguiano, M.
Centelles, M.
Viñas, X.
Robledo Martín, Luis Miguel
author_sort Routray, T. R.
title Reexamination of the N = 50 and Z = 28 shell closure
title_short Reexamination of the N = 50 and Z = 28 shell closure
title_full Reexamination of the N = 50 and Z = 28 shell closure
title_fullStr Reexamination of the N = 50 and Z = 28 shell closure
title_full_unstemmed Reexamination of the N = 50 and Z = 28 shell closure
title_sort reexamination of the n = 50 and z = 28 shell closure
publisher American Physical Society
publishDate 2022
url http://hdl.handle.net/10486/705415
https://doi.org/10.1103/PhysRevC.104.L011302
genre sami
genre_facet sami
op_relation Physical Review C: Nuclear Physics
https://doi.org/10.1103/PhysRevC.104.L011302
Gobierno de España. FIS2017-87534-P
Gobierno de España. CEX2019-000918- M
Gobierno de España. PGC2018-094583-B-I00
Gobierno de España. PID2019-104888GB-I00
Physical Review C 104.1 (2021): L011302
2469-9985 (print)
2469-9993 (online)
http://hdl.handle.net/10486/705415
doi:10.1103/PhysRevC.104.L011302
L011302-1
1
L011302--6
104
op_rights © 2021 American Physical Society
openAccess
op_doi https://doi.org/10.1103/PhysRevC.104.L011302
container_title Physical Review C
container_volume 104
container_issue 1
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