Shape Coexistence in Even–Even Nuclei: A Theoretical Overview
The last decade has seen a rapid growth in our understanding of the microscopic origins of shape coexistence, assisted by the new data provided by the modern radioactive ion beam facilities built worldwide. Islands of the nuclear chart in which shape coexistence can occur have been identified, and t...
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MDPI AG
2023-08-01
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| Online Access: | https://www.mdpi.com/2218-2004/11/9/117 |
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| author | Dennis Bonatsos Andriana Martinou Spyridon K. Peroulis Theodoros J. Mertzimekis Nikolay Minkov |
| author_facet | Dennis Bonatsos Andriana Martinou Spyridon K. Peroulis Theodoros J. Mertzimekis Nikolay Minkov |
| author_sort | Dennis Bonatsos |
| collection | DOAJ |
| description | The last decade has seen a rapid growth in our understanding of the microscopic origins of shape coexistence, assisted by the new data provided by the modern radioactive ion beam facilities built worldwide. Islands of the nuclear chart in which shape coexistence can occur have been identified, and the different microscopic particle–hole excitation mechanisms leading to neutron-induced or proton-induced shape coexistence have been clarified. The relation of shape coexistence to the islands of inversion, appearing in light nuclei, to the new spin-aligned phase appearing in <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>N</mi><mo>=</mo><mi>Z</mi></mrow></semantics></math></inline-formula> nuclei, as well as to shape/phase transitions occurring in medium mass and heavy nuclei, has been understood. In the present review, these developments are considered within the shell-model and mean-field approaches, as well as by symmetry methods. In addition, based on systematics of data, as well as on symmetry considerations, quantitative rules are developed, predicting regions in which shape coexistence can appear, as a possible guide for further experimental efforts that can help in improving our understanding of the details of the nucleon–nucleon interaction, as well as of its modifications occurring far from stability. |
| first_indexed | 2024-03-10T23:03:29Z |
| format | Article |
| id | doaj.art-5a1540ef8a2046999162983963f9223a |
| institution | Directory Open Access Journal |
| issn | 2218-2004 |
| language | English |
| last_indexed | 2024-03-10T23:03:29Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atoms |
| spelling | doaj.art-5a1540ef8a2046999162983963f9223a2023-11-19T09:31:45ZengMDPI AGAtoms2218-20042023-08-0111911710.3390/atoms11090117Shape Coexistence in Even–Even Nuclei: A Theoretical OverviewDennis Bonatsos0Andriana Martinou1Spyridon K. Peroulis2Theodoros J. Mertzimekis3Nikolay Minkov4Institute of Nuclear and Particle Physics, National Centre for Scientific Research “Demokritos”, 15310 Aghia Paraskevi, Attiki, GreeceInstitute of Nuclear and Particle Physics, National Centre for Scientific Research “Demokritos”, 15310 Aghia Paraskevi, Attiki, GreeceInstitute of Nuclear and Particle Physics, National Centre for Scientific Research “Demokritos”, 15310 Aghia Paraskevi, Attiki, GreeceDepartment of Physics, Zografou Campus, National and Kapodistrian University of Athens, 15784 Athens, GreeceInstitute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tzarigrad Road, 1784 Sofia, BulgariaThe last decade has seen a rapid growth in our understanding of the microscopic origins of shape coexistence, assisted by the new data provided by the modern radioactive ion beam facilities built worldwide. Islands of the nuclear chart in which shape coexistence can occur have been identified, and the different microscopic particle–hole excitation mechanisms leading to neutron-induced or proton-induced shape coexistence have been clarified. The relation of shape coexistence to the islands of inversion, appearing in light nuclei, to the new spin-aligned phase appearing in <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>N</mi><mo>=</mo><mi>Z</mi></mrow></semantics></math></inline-formula> nuclei, as well as to shape/phase transitions occurring in medium mass and heavy nuclei, has been understood. In the present review, these developments are considered within the shell-model and mean-field approaches, as well as by symmetry methods. In addition, based on systematics of data, as well as on symmetry considerations, quantitative rules are developed, predicting regions in which shape coexistence can appear, as a possible guide for further experimental efforts that can help in improving our understanding of the details of the nucleon–nucleon interaction, as well as of its modifications occurring far from stability.https://www.mdpi.com/2218-2004/11/9/117shape coexistenceshape phase transitionsislands of inversionshell modelmean fieldSU(3) symmetry |
| spellingShingle | Dennis Bonatsos Andriana Martinou Spyridon K. Peroulis Theodoros J. Mertzimekis Nikolay Minkov Shape Coexistence in Even–Even Nuclei: A Theoretical Overview Atoms shape coexistence shape phase transitions islands of inversion shell model mean field SU(3) symmetry |
| title | Shape Coexistence in Even–Even Nuclei: A Theoretical Overview |
| title_full | Shape Coexistence in Even–Even Nuclei: A Theoretical Overview |
| title_fullStr | Shape Coexistence in Even–Even Nuclei: A Theoretical Overview |
| title_full_unstemmed | Shape Coexistence in Even–Even Nuclei: A Theoretical Overview |
| title_short | Shape Coexistence in Even–Even Nuclei: A Theoretical Overview |
| title_sort | shape coexistence in even even nuclei a theoretical overview |
| topic | shape coexistence shape phase transitions islands of inversion shell model mean field SU(3) symmetry |
| url | https://www.mdpi.com/2218-2004/11/9/117 |
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