Rotational properties of ${}^{252,253,254}$No. Influence of pairing correlations

Abstract

Rotational bands of ${}^{252,253,254}$No and the fission barriers of ${}^{254}$No at spin 0$\hslash$ and 20$\hslash$ are calculated with the Hartree-Fock-Bogolyubov theory and the Lipkin-Nogami approximate particle number projection. The SLy4 Skyrme force is used in the particle-hole channel. A zero-range force with and without density-dependence is used in the particle-particle channel. The experimental ground state deformation (${\mathcal{Q}}_{20}$ = 32.8 b) is reproduced as well as the increase of the dynamical moment of inertia with frequency both for ${}^{252}$No and ${}^{254}$No. The rotational band of ${}^{253}$No is also calculated. Fission barriers of ${}^{254}$No at spin 0$\hslash$ and 20$\hslash$ show the robustness of shell-corrections against rotation in these heavy nuclei.

19 pages, 10 figures, Latex file

Cited by in corpus (30)

• Microscopic HFB+QRPA predictions of dipole strength for astrophysics applications
• Cranked Relativistic Hartree-Bogoliubov Theory: probing the gateway to superheavy nuclei
• Continuum Linear Response in Coordinate Space Hartree-Fock-Bogoliubov Formalism for Collective Excitations in Drip-line Nuclei
• Pairing correlations. Part 2: Microscopic analysis of odd-even mass staggering in nuclei
• Symmetry-Unrestricted Skyrme-Hartree-Fock-Bogoliubov Calculations for Exotic Shapes in N=Z Nuclei from 64Ge to 84Mo
• Skyrme mean-field study of rotational bands in transfermium isotopes
• Pairing and rotational properties of actinides and superheavy nuclei in covariant density functional theory
• Properties of nuclei in the nobelium region studied within the covariant, Skyrme, and Gogny energy density functionals
• Adiabatic fission barriers in superheavy nuclei
• Bare vs effective pairing forces. A microscopic finite-range interaction for HFB calculations in coordinate space
• Quadrupole resonances in unstable oxygen isotopes in time-dependent density-matrix formalism
• Self-consistent approach to deformation of intruder states in neutron-deficient Pb and Po
• Rotational properties of nuclei around ${}^{254}$No investigated using a spectroscopic-quality Skyrme energy density functional
• Understanding the different rotational behaviors of ${}^{252}$No and ${}^{254}$No
• Competition in rotation-alignment between high-j neutrons and protons in transfermium nuclei
• Structure of superheavy nuclei
• gamma-vibrational states in superheavy nuclei
• Low-lying dipole resonance in neutron-rich Ne isotopes
• Pairing and continuum effects on low-frequency quadrupole vibrations in deformed Mg isotopes close to the neutron drip line
• Valence pairing, core deformation and the development of two-neutron halos
• Two-body dissipation effect in nuclear fusion reactions
• Excitation Energies and Spins of the Yrast Superdeformed Band in ^{191}Hg
• Emergence of High-Order Deformation in Rotating Transfermium Nuclei: A Microscopic Understanding
• On the equivalence of pairing correlations and intrinsic vortical currents in rotating nuclei
• Rotational Properties of the Odd-$Z$ Transfermium Nucleus ${}^{255}$Lr by a Particle-number-conserving Method in the Cranked Shell Model
• Extended RPA with ground-state correlations
• Eigenstates of the time-dependent density-matrix theory
• QRPA calculations for M1 transitions with the noniterative finite amplitude method and the application to neutron radiative capture cross sections
• Pairing and nonaxial-shape correlations in $N=150$ isotones
• Model for independent particle motion