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01673nam a2200205Ia 4500 |
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10.1016-j.physletb.2022.137099 |
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220510s2022 CNT 000 0 und d |
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|a 03702693 (ISSN)
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|a Microscopic origin of shape coexistence in the N=90, Z=64 region
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| 260 |
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|b Elsevier B.V.
|c 2022
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| 856 |
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|z View Fulltext in Publisher
|u https://doi.org/10.1016/j.physletb.2022.137099
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|a 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. © 2022 The Author(s)
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|a Covariant density functional theory
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|a Shape coexistence
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|a Bonatsos, D.
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|a Karakatsanis, K.E.
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|a Martinou, A.
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|a Mertzimekis, T.J.
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|a Minkov, N.
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|t Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
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