Deformation-induced splitting of the isoscalar E0 giant resonance: Skyrme random-phase-approximation analysis

Kvasil J, Nesterenko VO, Repko A, Kleinig W, Reinhard PG (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Physical Review C - Nuclear Physics American Physical Society

Book Volume: 94

Article Number: 064302

Journal Issue: 6

DOI: 10.1103/PhysRevC.94.064302

Abstract

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-phase-approximation 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, because of 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.

Authors with CRIS profile

Paul-Gerhard Reinhard Naturwissenschaftliche Fakultät

Involved external institutions

Joint Institute for Nuclear Research (JINR) / Объединённый институт ядерных исследований (ОИЯИ) RU Russian Federation (RU) Univerzita Karlova v Praze / Charles University in Prague CZ Czech Republic (CZ)

How to cite

APA:

Kvasil, J., Nesterenko, V.O., Repko, A., Kleinig, W., & Reinhard, P.-G. (2016). Deformation-induced splitting of the isoscalar E0 giant resonance: Skyrme random-phase-approximation analysis. Physical Review C - Nuclear Physics, 94(6). https://doi.org/10.1103/PhysRevC.94.064302

MLA:

Kvasil, J., et al. "Deformation-induced splitting of the isoscalar E0 giant resonance: Skyrme random-phase-approximation analysis." Physical Review C - Nuclear Physics 94.6 (2016).

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