Microscopic origin of shape coexistence in the N=90, Z=64 region
A microscopic explanation of the nature of shape coexistence in the N=90, Z=64 region is suggested, based on calculations of single particle energies through standard covariant density functional theory. It is suggested that shape coexistence in the N=90 region is caused by the protons, which create...
| Main Authors: | , , , , |
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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/S0370269322002337 |
| _version_ | 1818474840148934656 |
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| author | Dennis Bonatsos K.E. Karakatsanis Andriana Martinou T.J. Mertzimekis N. Minkov |
| author_facet | Dennis Bonatsos K.E. Karakatsanis Andriana Martinou T.J. Mertzimekis N. Minkov |
| author_sort | Dennis Bonatsos |
| collection | DOAJ |
| description | A microscopic explanation of the nature of shape coexistence in the N=90, Z=64 region is suggested, based on calculations of single particle energies through standard covariant density functional theory. It is suggested that shape coexistence in the N=90 region is caused by the protons, which create neutron particle-hole (p-h) excitations across the N=112 3-dimensional isotropic harmonic oscillator (3D-HO) magic number, signaling the start of the occupation of the 1i13/2 intruder orbital, which triggers stronger proton-neutron interaction, causing the onset of the deformation and resulting in the shape/phase transition from spherical to deformed nuclei described by the X(5) critical point symmetry. A similar effect is seen in the N=60, Z=40 region, in which p-h excitations across the N=70 3D-HO magic number occur, signaling the start of the occupation of the 1h11/2 intruder orbital. |
| first_indexed | 2024-04-14T04:41:37Z |
| format | Article |
| id | doaj.art-3b0d37ed3098458280602785261181e3 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-14T04:41:37Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-3b0d37ed3098458280602785261181e32022-12-22T02:11:37ZengElsevierPhysics Letters B0370-26932022-06-01829137099Microscopic origin of shape coexistence in the N=90, Z=64 regionDennis Bonatsos0K.E. Karakatsanis1Andriana Martinou2T.J. Mertzimekis3N. Minkov4Institute of Nuclear and Particle Physics, National Centre for Scientific Research “Demokritos”, GR-15310 Aghia Paraskevi, Attiki, Greece; Corresponding author.Institute of Nuclear and Particle Physics, National Centre for Scientific Research “Demokritos”, GR-15310 Aghia Paraskevi, Attiki, Greece; Department of Physics, Faculty of Science, University of Zagreb, HR-10000 Zagreb, Croatia; Physics Department, Aristotle University of Thessaloniki, Thessaloniki GR-54124, GreeceInstitute of Nuclear and Particle Physics, National Centre for Scientific Research “Demokritos”, GR-15310 Aghia Paraskevi, Attiki, GreeceDepartment of Physics, National and Kapodistrian University of Athens, Zografou Campus, GR-15784 Athens, GreeceInstitute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tzarigrad Road, 1784 Sofia, BulgariaA microscopic explanation of the nature of shape coexistence in the N=90, Z=64 region is suggested, based on calculations of single particle energies through standard covariant density functional theory. It is suggested that shape coexistence in the N=90 region is caused by the protons, which create neutron particle-hole (p-h) excitations across the N=112 3-dimensional isotropic harmonic oscillator (3D-HO) magic number, signaling the start of the occupation of the 1i13/2 intruder orbital, which triggers stronger proton-neutron interaction, causing the onset of the deformation and resulting in the shape/phase transition from spherical to deformed nuclei described by the X(5) critical point symmetry. A similar effect is seen in the N=60, Z=40 region, in which p-h excitations across the N=70 3D-HO magic number occur, signaling the start of the occupation of the 1h11/2 intruder orbital.http://www.sciencedirect.com/science/article/pii/S0370269322002337Shape coexistenceCovariant density functional theory |
| spellingShingle | Dennis Bonatsos K.E. Karakatsanis Andriana Martinou T.J. Mertzimekis N. Minkov Microscopic origin of shape coexistence in the N=90, Z=64 region Physics Letters B Shape coexistence Covariant density functional theory |
| title | Microscopic origin of shape coexistence in the N=90, Z=64 region |
| title_full | Microscopic origin of shape coexistence in the N=90, Z=64 region |
| title_fullStr | Microscopic origin of shape coexistence in the N=90, Z=64 region |
| title_full_unstemmed | Microscopic origin of shape coexistence in the N=90, Z=64 region |
| title_short | Microscopic origin of shape coexistence in the N=90, Z=64 region |
| title_sort | microscopic origin of shape coexistence in the n 90 z 64 region |
| topic | Shape coexistence Covariant density functional theory |
| url | http://www.sciencedirect.com/science/article/pii/S0370269322002337 |
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