Octupole deformation properties in the actinides region using Fayans functionals

Abstract

In this first-of-its-kind survey conducted on heavy and deformed nuclei in the actinide region of the nuclear chart, we have charted nuclear ground state properties predicted by Fayans energy density functionals (EDFs), focusing in particularly on octupole deformability. Compared to earlier studies with Skyrme-based EDFs, we found similar region of octupole deformed nuclei. Moreover, Fayans EDFs were found to provide accurate predictions for various ground state properties, when compared to experimental data. Comparison to Skyrme-based EDF shows similar trends in various nuclear properties.

Figures (19)

• Figure 1: Calculated ground state deformation energy of $122\leq N \leq150$ even-$N$ Thorium isotopes with Fy($\Delta r$,HFB), as a function of quadrupole and octupole deformations. The stars represent the potential energy minimum of each isotope obtained via the unconstrained calculations.
• Figure 2: Same plots as in Fig. \ref{['fig:def1']} but using Fy(std).
• Figure 3: Same plots as in Fig. \ref{['fig:def1']} but for Uranium isotopes.
• Figure 4: Same plots as in Fig. \ref{['fig:def1']} but for Uranium isotopes and with Fy(std).
• Figure 5: Same plots as in Fig. \ref{['fig:def1']} but for Plutonium isotopes.