Population and decay of superdeformed nuclei probed by discrete and quasi-continuum <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.gif" display="inline" overflow="scroll"><mml:mi>γ</mml:mi></mml:math>-ray spectroscopy

Лопез-Мартенс, А.; Lauritsen, T.; Leoni, S.; Døssing, T.; Khoo, T. L.; Siem, S.

doi:10.1016/j.ppnp.2016.02.003

Cited by 13 publications

(7 citation statements)

References 202 publications

(346 reference statements)

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“…Thanks to that, the bands can be followed over many transitions down to an end point where the decay out of the band takes place abruptly, with a very complicated highly-fragmented multi-step pattern of transitions. In many cases, the decay-out cannot be resolved in experiment [69]. This phenomenon has been dubbed superdeformation (SD) in the literature.…”

Section: Superdeformed Minimamentioning

confidence: 99%

Impact of the surface energy coefficient on the deformation properties of atomic nuclei as predicted by Skyrme energy density functionals

et al. 2019

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Background: In the framework of nuclear energy density functional (EDF) methods, many nuclear phenomena are related to the deformation of intrinsic states. Their accurate modeling relies on the correct description of the change of nuclear binding energy with deformation. The two most important contributions to the deformation energy have their origin in shell effects that are correlated to the spectrum of single-particle states, and the deformability of nuclear matter, that can be characterized by a model-dependent surface energy coefficient a surf .Purpose: With the goal of improving the global performance of nuclear EDFs through the fine-tuning of their deformation properties, the purpose of this study is threefold. First, to analyze the impact of systematic variations of a surf on properties of nuclei; second, to identify observables that can be safely used to narrow down the range of appropriate values of a surf to be targeted in future parameter fits; third, to analyze the interdependence of a surf with other properties of a nuclear EDF.Methods: Results for a large variety of relevant observables of deformed nuclei obtained from self-consistent mean-field calculations with a set of purpose-built SLy5sX parametrizations of the Skyrme EDF are correlated with the value of a surf .Results: The performance of the SLy5sX parametrizations for characteristic energies of the fission barriers of 180 Hg, 226 Ra, and 240 Pu, excitation energies, electromagnetic moments and moments of inertia of superdeformed states in the A ≈ 190 region, properties of shape coexisting states at normal deformation in the Pb, Kr, and Zr region, properties of octupole-deformed 144 Ba, even-even Th isotopes, and 110 Zr, separation energies along isotopic and isotonic chains are compared with available experimental data. Conclusions:The three main conclusions are that there is an evident preference for a comparatively low value of a surf , as expected from the performance of existing parametrizations; that the isospin dependence of the surface energy also needs further fine-tuning in order to describe trends across the chart of nuclei; and that a satisfying simultaneous description of fission barriers and superdeformed states requires a better description of the singleparticle spectra.

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Section: Superdeformed Minimamentioning

confidence: 99%

Impact of the surface energy coefficient on the deformation properties of atomic nuclei as predicted by Skyrme energy density functionals

et al. 2019

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“…A comparison with available data, taken from Refs. [29,31,32], is presented in Figs. 5 and 6, where Fig.…”

Section: Resultsmentioning

confidence: 99%

“…6, where the theoretical absolute values of the charge quadrupole moment for the ground state (black points) and the SD minimum (blue squares) of Pt, Hg, and Pb are compared with the corresponding experimental data (red stars) taken from Refs. [29,31,32].…”

Section: Resultsmentioning

confidence: 99%

“…All local minima correspond to reflection symmetric shapes (q3 = 0). Experimental energies of SD minima (red dots) are taken from Ref [29]…”

mentioning

confidence: 99%

“…Fig.6. Predicted electric quadrupole moments of Pt, Hg, and Pb isotopes in the ground-state (black points) and in the superdeformed isomeric states (blue squares) are compared with the experimental data (stars) taken from Refs [29,31,. 32].…”

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confidence: 99%

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Shape isomers in Pt, Hg and Pb isotopes with $${\hbox {N}}\le 126$$

et al. 2020

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Deformation-energy surfaces of 54 even-even isotopes of Pt, Hg and Pb nuclei with neutron numbers up to 126 are investigated within a macroscopic-microscopic model based on the Lublin-Strasbourg-Drop macroscopic energy and shell plus pairing-energy corrections obtained from a Yukawa-folded meanfield potential at the desired deformation. A new, rapidly converging Fourier shape parametrization is used to describe nuclear shapes. The stability of shape isomeric states with respect to non-axial and higher-order deformations is investigated.

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Recent Developments and Perspectives in Nuclear Structure by γ and Particle Spectroscopy

Leoni

Bracco

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et al. 2018

Toward a Science Campus in Milan

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Population and decay of superdeformed nuclei probed by discrete and quasi-continuum γ-ray spectroscopy

Cited by 13 publications

References 202 publications

Impact of the surface energy coefficient on the deformation properties of atomic nuclei as predicted by Skyrme energy density functionals

Impact of the surface energy coefficient on the deformation properties of atomic nuclei as predicted by Skyrme energy density functionals

Shape isomers in Pt, Hg and Pb isotopes with $${\hbox {N}}\le 126$$

Recent Developments and Perspectives in Nuclear Structure by γ and Particle Spectroscopy

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