Nonaxial-octupole Y_{32} correlations in N = 150 isotones from multidimensional constrained covariant density functional theories

Abstract

The non-axial reflection-asymmetric ${\beta }_{32}$ shape in some transfermium nuclei with N=150, namely ${}^{246}$Cm, ${}^{248}$Cf, ${}^{250}$Fm, and ${}^{252}$No are investigated with multidimensional constrained covariant density functional theories. By using the density-dependent point coupling covariant density functional theory with the parameter set DD-PC1 in the particle-hole channel, it is found that, for the ground states of ${}^{248}$Cf and ${}^{250}$Fm, the non-axial octupole deformation parameter ${\beta }_{32}>0.03$ and the energy gain due to the ${\beta }_{32}$ distortion is larger than 300 keV. In ${}^{246}$Cm and ${}^{252}$No, shallow ${\beta }_{32}$ minima are found. The occurrence of the non-axial octupole ${\beta }_{32}$ correlations is mainly from a pair of neutron orbitals $[734]9/2$ ($\nu j_{15/2}$) and $[622]5/2$ ($\nu g_{9/2}$) which are close to the neutron Fermi surface and a pair of proton orbitals $[521]3/2$ ($\pi f_{7/2}$) and $[633]7/2$ ($\pi i_{13/2}$) which are close to the proton Fermi surface. The dependence of the non-axial octupole effects on the form of energy density functional and on the parameter set is also studied.

arXiv comment5 pages, 2 figures

References in corpus (25)

• Relativistic Continuum Hartree Bogoliubov Theory for Ground State Properties of Exotic Nuclei
• New parametrization for the nuclear covariant energy density functional with point-coupling interaction
• Relativistic Nuclear Energy Density Functionals: adjusting parameters to binding energies
• Relativistic Hartree-Bogoliubov model with density-dependent meson-nucleon couplings
• A finite range pairing force for density functional theory in superfluid nuclei
• Multi chiral-doublets in one single nucleus
• Potential Energy Surfaces of Actinide Nuclei from a Multi-dimensional Constraint Covariant Density Functional Theory: Barrier Heights and Saddle Point Shapes
• Configuration mixing of angular-momentum projected triaxial relativistic mean-field wave functions
• Open Problems in Understanding the Nuclear Chirality
• Nuclear Tetrahedral Symmetry: Possibly Present Throughout the Periodic Table
• Quadrupole deformation $(\beta ,\gamma )$ of light $\Lambda$ hypernuclei in constrained relativistic mean field model: shape evolution and shape polarization effect of $\Lambda$ hyperon
• Symmetry-Unrestricted Skyrme-Hartree-Fock-Bogoliubov Calculations for Exotic Shapes in N=Z Nuclei from 64Ge to 84Mo
• 3D Relativistic Hartree-Bogoliubov model with a separable pairing interaction
• Axially deformed relativistic Hartree Bogoliubov with separable pairing force
• Systematic investigation of the rotational bands in nuclei with $Z\approx 100$ using a particle-number conserving method based on a cranked shell model
• Nonaxial-octupole effect in superheavy nuclei
• Tetrahedral and Triangular Deformations of $Z=N$ Nuclei in Mass Region $A\sim 60-80$
• Particle-number conserving analysis of rotational bands in 247,249Cm and 249Cf
• Reflection asymmetric relativistic mean field approach and its application to the octupole deformed nucleus ${}^{226}$Ra
• Tetrahedral Symmetry in Ground- and Low-Lying States of Exotic A ~ 110 Nuclei
• Tetrahedral correlations in ${}^{80}$Zr and ${}^{98}$Zr
• Nuclei with Tetrahedral Symmetry
• Spurious Shell Closures in the Relativistic Mean Field Model
• Nuclear tetrahedral configurations at spin zero
• Hartree-Fock-Bogolyubov calculations for nuclei with tetrahedral deformation

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• Octupole deformation in the ground states of even-even nuclei: a global analysis within the covariant density functional theory
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• Superdeformed $\Lambda$ hypernuclei from relativistic mean field models
• Multidimensionally-constrained relativistic mean-field study of triple-humped barriers in actinides
• Spectroscopy of reflection-asymmetric nuclei with relativistic energy density functionals
• Rotational properties of the superheavy nucleus 256Rf and its neighboring even-even nuclei in particle-number conserving cranked shell model
• Tetrahedral shapes of neutron-rich Zr isotopes from multidimensionally-constrained relativistic Hartree-Bogoliubov model
• Multiple chiral doublet bands with octupole correlations in reflection-asymmetric triaxial particle rotor model
• Octupole deformation in the ground states of even-even $Z\sim 96,N\sim 196$ actinides and superheavy nuclei
• Three-dimensional mesh calculations for covariant density functional theory
• Ground state properties and potential energy surfaces of ${}^{270}$Hs from multidimensionally-constrained relativistic mean field model
• New effective interactions for hypernuclei in density dependent relativistic mean field model
• Microscopic core-quasiparticle coupling model for spectroscopy of odd-mass nuclei with octupole correlations
• Angular momentum and parity projected multidimensionally constrained relativistic Hartree-Bogoliubov model
• Effect of tetrahedral shapes in heavy and superheavy nuclei
• Microscopic analysis of octupole shape transitions in neutron-rich actinides with relativistic energy density functional
• Microscopic study of higher-order deformation effects on the ground states of superheavy nuclei around ${}^{270}$Hs
• Multi-dimensional constraint relativistic mean field model and applications in actinide and transfermium nuclei
• Analytical description of the excited state phase transition to octupole deformed shape in alternating parity bands
• Multi-dimensional potential energy surfaces and non-axial octupole correlations in actinide and transfermium nuclei from relativistic mean field models
• Pairing and nonaxial-shape correlations in $N=150$ isotones
• Ground state and fission properties of even-$A$ uranium isotopes from multidimensionally-constrained relativistic mean field model
• Evolution of $N=28$ shell closure in relativistic continuum Hartree-Bogoliubov theory
• Influence of binding energies of electrons on nuclear mass predictions
• Tetrahedral shape and Lambda impurity effect in ${}^{80}$Zr with a multidimensionally constrained relativistic Hartree-Bogoliubov model
• Quantum corrections to the Relativistic mean-field theory