Octupole deformation in the ground states of even-even nuclei: a global analysis within the covariant density functional theory

Abstract

A systematic investigation of octupole deformed nuclei is presented for even-even systems with $Z\le 106$ located between the two-proton and two-neutron drip lines. For this study we use five most up-to-date covariant energy density functionals of different types, with a non-linear meson coupling, with density dependent meson couplings, and with density-dependent zero-range interactions. Pairing correlations are treated within relativistic Hartree-Bogoliubov (RHB) theory based on an effective separable particle-particle interaction of finite range. This allows us to assess theoretical uncertainties within the present covariant models for the prediction of physical observables relevant for octupole deformed nuclei. In addition, a detailed comparison with the predictions of non-relativistic models is performed. A new region of octupole deformation, centered around $Z\sim 98,N\sim 196$ is predicted for the first time. In terms of its size in the $(Z,N)$ plane and the impact of octupole deformation on binding energies this region is similar to the best known region of octupole deformed nuclei centered at $Z\sim 90,N\sim 136$. For the later island of octupole deformed nuclei, the calculations suggest substantial increase of its size as compared with available experimental data.

arXiv comment26 pages, 19 figures, 1 Table, submitted to Physical Review C

References in corpus (57)

• New parametrization for the nuclear covariant energy density functional with point-coupling interaction
• Relativistic Nuclear Energy Density Functionals: adjusting parameters to binding energies
• R-Process Nucleosynthesis in Dynamically Ejected Matter of Neutron Star Mergers
• Shell structure of superheavy nuclei in self-consistent mean-field models
• The effective force NL3 revisited
• The information content of a new observable: the case of the nuclear neutron skin
• A finite range pairing force for density functional theory in superfluid nuclei
• Error Estimates of Theoretical Models: a Guide
• Global performance of covariant energy density functionals: ground state observables of even-even nuclei and the estimate of theoretical uncertainties
• Global systematics of octupole excitations in even-even nuclei
• Relativistic mean field interaction with density dependent meson-nucleon vertices based on microscopical calculations
• Spontaneous fission modes and lifetimes of super-heavy elements in the nuclear density functional theory
• Multidimensionally-constrained relativistic mean field models and potential energy surfaces of actinide nuclei
• Cranked Relativistic Hartree-Bogoliubov Theory: probing the gateway to superheavy nuclei
• Fission half-lives of super-heavy nuclei in a microscopic approach
• Fission barriers and asymmetric ground states in the relativistic mean field theory
• Fission barriers in covariant density functional theory: extrapolation to superheavy nuclei
• Nuclear landscape in covariant density functional theory
• Microscopic description of octupole shape-phase transitions in light actinides and rare-earth nuclei
• Fission barriers in actinides in covariant density functional theory: the role of triaxiality
• The fission barriers in Actinides and superheavy nuclei in covariant density functional theory
• Dynamics of nuclear single-particle structure in covariant theory of particle-vibration coupling: from light to superheavy nuclei
• Structure properties of ${}^{226}$Th and ${}^{256,258,260}$Fm fission fragments: mean field analysis with the Gogny force
• Microscopic description of cluster radioactivity in actinide nuclei
• Low densities in nuclear and neutron matters and in the nuclear surface
• The neutron drip line: single-particle degrees of freedom and pairing properties as sources of theoretical uncertainties
• Fission properties for r-process nuclei
• Heart - Shaped Nuclei: Condensation of Rotational Aligned Octupole Phonons
• Covariant density functional theory: Reexamining the structure of superheavy nuclei
• Spontaneous fission lifetimes from the minimization of self-consistent collective action
• Pairing and rotational properties of actinides and superheavy nuclei in covariant density functional theory
• Microscopic description of fission in Uranium isotopes with the Gogny energy density functional
• Dirac-Brueckner-Hartree-Fock calculations for isospin asymmetric nuclear matter based on improved approximation schemes
• Microscopic analysis of the octupole phase transition in Th isotopes
• Relativistic Energy Density Functional Description of Shape Transition in Superheavy Nuclei
• Properties of nuclei in the nobelium region studied within the covariant, Skyrme, and Gogny energy density functionals
• Time-odd mean fields in covariant density functional theory I. Non-rotating systems
• Nonaxial-octupole Y_{32} correlations in N = 150 isotones from multidimensional constrained covariant density functional theories
• Spectroscopy of quadrupole and octupole states in rare-earth nuclei from a Gogny force
• Microscopic description of quadrupole-octupole coupling in Sm and Gd isotopes with the Gogny Energy Density Functional
• Octupole deformation properties of the Barcelona-Catania-Paris energy density functionals
• Beyond relativistic mean-field approach for nuclear octupole excitations
• Anatomy of molecular structures in ${}^{20}$Ne
• Reflection asymmetric relativistic mean field approach and its application to the octupole deformed nucleus ${}^{226}$Ra
• Non-yrast nuclear spectra in a model of coherent quadrupole-octupole motion
• Exploring the multi-humped fission barrier of 238U via sub-barrier photofission
• Octupole degree of freedom for the critical-point candidate nucleus ${}^{152}$Sm in a reflection-asymmetric relativistic mean-field approach
• Pairing in exotic neutron rich nuclei around the drip line and in the crust of neutron stars
• Octupole deformation properties of actinide isotopes within a mean field approach
• Structure of ${}^{240}$Pu: Evidence for Octupole Phonon Condensation?
• Ground state octupole correlation energies with effective forces
• Deformed one-quasiparticle states in covariant density functional theory
• Possible experimental signature of octupole correlations in the 0${}_2^{+}$ states of the actinides
• Microscopic description of rotation: From ground states to the extremes of ultra-high spin
• Octupole deformation for Ba isotopes in a reflection-asymmetric relativistic mean-field approach
• Addressing spectroscopic quality of covariant density functional theory
• Search for octupole correlations in ${}^{147}$Nd

Cited by in corpus (58)

• Towards an ab initio covariant density functional for nuclear structure
• Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive ${}^{222}$Ra and ${}^{228}$Ra Beams
• Shape of atomic nuclei in heavy ion collisions
• Landscape of pear-shaped even-even nuclei
• Covariant energy density functionals: nuclear matter constraints and global ground state properties
• Opportunities for Fundamental Physics Research with Radioactive Molecules
• Charge radii in covariant density functional theory: a global view
• Assessing theoretical uncertainties in fission barriers of superheavy nuclei
• Hyperheavy nuclei: existence and stability
• Spectroscopy of reflection-asymmetric nuclei with relativistic energy density functionals
• First direct measurement of the intrinsic dipole moment in pear-shaped thorium isotopes
• Skyrme-Hartree-Fock-Bogoliubov mass models on a 3D Mesh: Effect of triaxial shape
• Extension of nuclear landscape to hyperheavy nuclei
• Tetrahedral shapes of neutron-rich Zr isotopes from multidimensionally-constrained relativistic Hartree-Bogoliubov model
• Electric dipole moments of atoms and molecules produced by enhanced nuclear Schiff moments
• Time-dependent generator coordinate method study of mass-asymmetric fission of actinides
• Octupole deformation in the ground states of even-even $Z\sim 96,N\sim 196$ actinides and superheavy nuclei
• The observation of vibrating pear shapes in radon nuclei: update
• The propagation of statistical errors in covariant density functional theory: ground state observables and single-particle properties
• Superheavy nuclei in microscopic collective Hamiltonian approach: the impact of beyond mean field correlations on the ground state and fission properties
• Covariant density functional theory input for r-process simulations in actinides and superheavy nuclei: the ground state and fission properties
• Shape transition with temperature of the pear-shaped nuclei in covariant density functional theory
• The impact of the surface energy coefficient on the deformation properties of atomic nuclei as predicted by Skyrme energy density functionals
• Anatomy of octupole correlations in ${}^{96}$Zr with a symmetry-restored multidimensionally-constrained covariant density functional theory
• Islands of shape coexistence from single-particle spectra in covariant density functional theory
• Evolution of octupole deformation and collectivity in neutron-rich lanthanides
• Octupole correlations in light actinides from the interacting boson model based on the Gogny energy density functional
• Quadrupole-octupole coupling and the onset of octupole deformation in actinides
• Microscopic origin of reflection-asymmetric nuclear shapes
• High-resolution $(p,t)$ study of low-spin states in ${}^{240}$Pu: Octupole excitations, $\alpha$ clustering, and other structure features
• Microscopic core-quasiparticle coupling model for spectroscopy of odd-mass nuclei with octupole correlations
• Microscopic description of quadrupole-octupole coupling in neutron-rich actinides and superheavy nuclei with the Gogny-D1M energy density functional
• Angular momentum and parity projected multidimensionally constrained relativistic Hartree-Bogoliubov model
• Microscopic description of octupole collective excitations near $N=56$ and $N=88$
• Microscopic description of quadrupole-octupole coupling in actinides with the Gogny-D1M energy density functional
• Physics of even-even superheavy nuclei with 96 < Z < 110 in the Quark-Meson-Coupling Model
• Microscopic analysis of octupole shape transitions in neutron-rich actinides with relativistic energy density functional
• Laser-coolable AcOH${}^{+}$ ion for $\mathcal{C}\mathcal{P}$-violation searches
• Quadrupole-octupole coupling and the evolution of collectivity in neutron-deficient Xe, Ba, Ce, and Nd isotopes
• Charge radii, moments and masses of mercury isotopes across the N = 126 shell closure
• Deformed band structures in neutron-rich ${}^{152-158}$Pm isotopes
• Nuclear ground-state properties probed by the relativistic Hartree-Bogoliubov approach
• Hyperheavy spherical and toroidal nuclei: the role of shell structure
• Enhanced Magnetic Quadrupole Moments in Nuclei with Octupole Deformation and their CP-violating effects in molecules
• Octupole deformation in neutron-rich actinides and superheavy nuclei and the role of nodal structure of single-particle wavefunctions in extremely deformed structures of light nuclei
• Origin of octupole deformation softness in atomic nuclei
• Beyond-mean-field description of octupolarity in dysprosium isotopes with the Gogny-D1M energy density functional
• Generator coordinate method for nuclear octupole excitations: status and perspectives
• Survey of deformation in nuclei in order to estimate the enhancement of sensitivity to atomic EDM
• Influence of collective nuclear vibrations on initial state eccentricities in Pb+Pb collisions
• Gallagher-Moszkowski splitting in deformed odd-odd nuclei within a microscopic approach
• Semiclassical origin of nuclear ground-state octupole deformations
• Octupole deformation of nuclei near the spherical closed-shell configurations
• Impact of choices for center-of-mass correction energy on the surface energy of Skyrme energy density functionals
• Imprints of octupole collectivity in uranium-238 on relativistic heavy-ion flow observables
• Impact of octupole deformation on the nuclear electromagnetic response
• A survey of nuclear quadrupole deformation in order to estimate the nuclear MQM and its relative contribution to the atomic EDM
• Global study of separable pairing interaction in covariant density functional theory