Deformation-induced splitting of the monopole giant resonance in<sup>24</sup>Mg

Kvasil, J.; Nesterenko, V. O.; Repko, A.; Reinhard, P.‐G.; Kleinig, W.

doi:10.1051/epjconf/201610705003

Cited by 10 publications

(7 citation statements)

References 27 publications

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“…Results have recently become available for E0 and E2 strengths in 28 Si from calculations in the Skyrme QRPA approach with the SVbas interaction [65]. These results, included in Figs.…”

Section: Discussionmentioning

confidence: 99%

Effect of ground-state deformation on isoscalar giant resonances inSi28

et al. 2016

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Multipole strength distributions for isoscalar L ≤ 2 transitions in 28 Si have been extracted using 386-MeV inelastic α scattering at extremely forward angles, including 0• . Observed strength distributions are in good agreement with microscopic calculations for an oblate-deformed ground-state. In particular, a large peak at an excitation energy of 17.7 MeV in the isoscalar giant monopole resonance (ISGMR) strength is consistent with the calculations.

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“…Results have recently become available for E0 and E2 strengths in 28 Si from calculations in the Skyrme QRPA approach with the SVbas interaction [65]. These results, included in Figs.…”

Section: Discussionmentioning

confidence: 99%

Effect of ground-state deformation on isoscalar giant resonances inSi28

et al. 2016

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“…[205]. Right panel: The ISGMR strength distributions from RCNP [208] and by Texas A&M [193] data, in comparison with the results from deformed QRPA calculations with Skyrme functionals SkM* and SVbas [208,210]. Figure taken from Ref.…”

Section: Isoscalar Giant Monopole Resonancementioning

confidence: 99%

Nuclear equation of state from ground and collective excited state properties of nuclei

Roca-Maza

Paar

2018

Progress in Particle and Nuclear Physics

196

110

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This contribution reviews the present status on the available constraints to the nuclear equation of state (EoS) around saturation density from nuclear structure calculations on ground and collective excited state properties of atomic nuclei. It concentrates on predictions based on self-consistent mean-field calculations, which can be considered as an approximate realization of an exact energy density functional (EDF). EDFs are derived from effective interactions commonly fitted to nuclear masses, charge radii and, in many cases, also to pseudo-data such as nuclear matter properties. Although in a model dependent way, EDFs constitute nowadays a unique tool to reliably and consistently access bulk ground state and collective excited state properties of atomic nuclei along the nuclear chart as well as the EoS. For comparison, some emphasis is also given to the results obtained with the so called ab initio approaches that aim at describing the nuclear EoS based on interactions fitted to few-body data only. Bridging the existent gap between these two frameworks will be essential since it may allow to improve our understanding on the diverse phenomenology observed in nuclei. Examples on observations from astrophysical objects and processes sensitive to the nuclear EoS are also briefly discussed. As the main conclusion, the isospin dependence of the nuclear EoS around saturation density and, to a lesser extent, the nuclear matter incompressibility remain to be accurately determined. Experimental and theoretical efforts in finding and measuring observables specially sensitive to the EoS properties are of paramount importance, not only for low-energy nuclear physics but also for nuclear astrophysics applications. 7 The expression introduced by Migdal in Ref. [43] neglected the term in a AS . 8 From a macroscopic picture it would correspond to an isotropic compression. 9 From a macroscopic picture it would correspond to a non-isotropic compression. 15

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“…for Sm [6,14], Mo [15] and Cd [16,17] isotopes, and ii) the progress of modern self-consistent mean-field models (relativistic, Skyrme, Gogny) [18,19]. In recent selfconsistent QRPA calculations, the ISGMR in deformed Mg [20][21][22][23], Si [20], Zr [24] and Nd-Sm [25,26] isotopes as well as in 238 U [27] was explored. The results of early studies [8][9][10][11] were generally confirmed.…”

Section: Introductionmentioning

confidence: 99%

Deformation-induced splitting of the isoscalarE0giant resonance: Skyrme random-phase-approximation analysis

et al. 2016

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The deformation-induced splitting of isoscalar giant monopole resonance (ISGMR) is systematically analyzed in a wide range of masses covering medium, rare-earth, actinide, and superheavy axial deformed nuclei. The study is performed within the fully self-consistent quasiparticle random-phaseapproximation (QRPA) method based on the Skyrme functional. Two Skyrme forces, one with a large (SV-bas) and one with a small (SkP) nuclear incompressibility, are considered. The calculations confirm earlier results that, due to the deformation-induced E0-E2 coupling, the isoscalar E0 resonance attains a double-peak structure and significant energy upshift. Our results are compared with available analytic estimations. Unlike earlier studies, we get a smaller energy difference between the lower and upper peaks and thus a stronger E0-E2 coupling. This in turn results in more pumping of E0 strength into the lower peak and more pronounced splitting of ISGMR. We also discuss widths of the peaks and their negligible correlation with deformation.

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Deformation-induced splitting of the monopole giant resonance in²⁴Mg

Cited by 10 publications

References 27 publications

Effect of ground-state deformation on isoscalar giant resonances inSi28

Effect of ground-state deformation on isoscalar giant resonances inSi28

Nuclear equation of state from ground and collective excited state properties of nuclei

Deformation-induced splitting of the isoscalarE0giant resonance: Skyrme random-phase-approximation analysis

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Deformation-induced splitting of the monopole giant resonance in24Mg

Cited by 10 publications

References 27 publications

Effect of ground-state deformation on isoscalar giant resonances inSi28

Effect of ground-state deformation on isoscalar giant resonances inSi28

Nuclear equation of state from ground and collective excited state properties of nuclei

Deformation-induced splitting of the isoscalarE0giant resonance: Skyrme random-phase-approximation analysis

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Deformation-induced splitting of the monopole giant resonance in²⁴Mg