Figure 1

Experimental ratio of the first $4^{+}$ and $2^{+}$ energies for various isotone (left) and isotope (right) chains. Dashed horizontal lines are plotted at 3.33 and 2.5.Reuse & Permissions

Figure 2

PECs for several isotope chains obtained from HF+BCS calculations with various Skyrme and pairing forces.Reuse & Permissions

Figure 3

PECs for $N=116$ isotones obtained from mean field calculations with various forces.Reuse & Permissions

Figure 4

PECs for $Z=74$ isotopes obtained from mean field calculations with various forces.Reuse & Permissions

Figure 5

Intrinsic quadrupole moments for five isotope chains as a function of neutron number. Theoretical results obtained from Skyrme-SLy4, relativistic mean field (RMF), and Gogny force are compared with experimental data from Refs. [42] (full circles) and [43] (open circles). For SLy4, thick lines connect the quadrupole moments of the ground states.Reuse & Permissions

Figure 6

Contour plot of the PES of ${}^{190}\mathrm{W}$ in a $\beta \text{−}\gamma$ plane-like representation. Instead of the β deformation parameter, we used the total mass quadrupole moment $Q$ [see Eq. (3)] in units of barns. γ is in degrees. The contour lines correspond to the following scheme: from ${\epsilon }_{\min }+0.25$ MeV to ${\epsilon }_{\min }+2.0$ MeV alternating dotted and dashed contours are plotted every $0.25$ MeV (the contour ${\epsilon }_{\min }+0.25$ MeV is plotted in blue, the contours ${\epsilon }_{\min }+0.50$ MeV and ${\epsilon }_{\min }+0.75$ MeV are plotted in green; those corresponding to ${\epsilon }_{\min }+1.00$ MeV and ${\epsilon }_{\min }+1.25$ MeV are plotted in red; the rest in black); from ${\epsilon }_{\min }+2.50$ MeV to ${\epsilon }_{\min }+4.50$ MeV the contour lines are plotted every $0.50$ MeV as full lines; from ${\epsilon }_{\min }+5.00$ MeV to ${\epsilon }_{\min }+10.00$ MeV the contour lines are plotted again every $0.50$ MeV as dashed lines; finally from ${\epsilon }_{\min }+11.00$ MeV to ${\epsilon }_{\min }+20.00$ MeV contour lines are depicted every $1.00$ MeV as full lines. Calculations have been performed with the parametrization SLy4 of the Skyrme force in the particle-hole channel plus a zero range and density-dependent pairing interaction with strength $g=1000$ MeV fm${}^3$.Reuse & Permissions

Figure 7

HF+BCS energy of $N=114,116$, and 118 isotones plotted as a function of the triaxial deformation parameter γ (degrees) for the $Q$ values at which the energy minima are obtained in the axial case.Reuse & Permissions