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DOE OSTI · 2298947

Landscape of nuclear deformation softness with spherical quasiparticle random-phase approximation

Le Anh, Nguyen·Loc, Bui Minh·Papakonstantinou, Panagiota·Auerbach, Naftali
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Abstract

We investigate the stability and softness of nuclei against quadrupole, octupole, and hexadecapole deformation. By applying the spherical Skyrme-force Hartree-Fock Bardeen-Cooper-Schrieffer quasiparticle random phase approximation, we diagnose ground-state deformation when imaginary solutions are obtained, i.e., the spherical ground state collapses. We also calculate the multipole polarizability in spherical nuclei with no collapse, as a measure of softness. This numerically light and theoretically sound method is found able to capture deformation patterns across the nuclide chart. As a result, the connection between the intrinsic shape of nuclei and the dynamics of their low-lying collective states is established and the role of shell structure is discussed.

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73 NUCLEAR PHYSICS AND RADIATION PHYSICSCollective levelsCollective modelsElectromagnetic transitionsEnergy levelsNuclear density functional theoryNuclear shapes and moments.

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Le Anh, Nguyen, Loc, Bui Minh, Papakonstantinou, Panagiota, Auerbach, Naftali. 2024-02-12. Landscape of nuclear deformation softness with spherical quasiparticle random-phase approximation. https://doi.org/10.1103/physrevc.109.024313

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