Microscopic study of higher-order deformation effects on the ground states of superheavy nuclei around ${}^{270}$Hs

Abstract

We study the effects of higher-order deformations ${\beta }_{\lambda }$ ($\lambda =4,6,8,$ and $10$) on the ground state properties of superheavy nuclei (SHN) near the doubly magic deformed nucleus ${}^{270}$Hs by using the multidimensionally-constrained (MDC) relativistic mean-field (RMF) model with five effective interactions PC-PK1, PK1, NL3${}^{\ast }$, DD-ME2, and PKDD. The doubly magic properties of ${}^{270}$Hs are featured by the large energy gaps at $N=162$ and $Z=108$ in the single-particle spectra. By investigating the binding energies and single-particle levels of ${}^{270}$Hs in multidimensional deformation space, we find that the deformation ${\beta }_6$ has the greatest impact on the binding energy among these higher-order deformations and influences the shell gaps considerably. Similar conclusions hold for other SHN near ${}^{270}$Hs. Our calculations demonstrate that the deformation ${\beta }_6$ must be considered when studying SHN by using MDC-RMF.

arXiv commentaccepted for publication in Chin. Phys. C

References in corpus (44)

• Nuclear ground-state masses and deformations: FRDM(2012)
• 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: Mean-Field and Beyond
• Surface diffuseness correction in global mass formula
• Exotic modes of excitation in atomic nuclei far from stability
• New effective interactions in RMF theory with non-linear terms and density-dependent meson-nucleon coupling
• Superheavy nuclei in selfconsistent nuclear calculations
• The effective force NL3 revisited
• Hidden pseudospin and spin symmetries and their origins in atomic nuclei
• Neutron halo in deformed nuclei
• Global performance of covariant energy density functionals: ground state observables of even-even nuclei and the estimate of theoretical uncertainties
• Masses, Deformations and Charge Radii--Nuclear Ground-State Properties in the Relativistic Mean Field Model
• The limits of the nuclear landscape explored by the relativistic continuum Hatree-Bogoliubov theory
• Halos in medium-heavy and heavy nuclei with covariant density functional theory in continuum
• Potential Energy Surfaces of Actinide Nuclei from a Multi-dimensional Constraint Covariant Density Functional Theory: Barrier Heights and Saddle Point Shapes
• Deformed relativistic Hartree Bogoliubov theory in continuum
• Magic numbers for superheavy nuclei in relativistic continuum Hartree-Bogoliubov theory
• Multidimensionally-constrained relativistic mean field models and potential energy surfaces of actinide nuclei
• Computer program for the relativistic mean field description of the ground state properties of even-even axially deformed nuclei
• Selfconsistent calculations of fission barriers in the Fm region
• Quadrupole deformation $(\beta ,\gamma )$ of light $\Lambda$ hypernuclei in constrained relativistic mean field model: shape evolution and shape polarization effect of $\Lambda$ hyperon
• Multidimensionally-constrained covariant density functional theories --- nuclear shapes and potential energy surfaces
• Shrunk halo and quenched shell gap at $N=16$ in ${}^{22}$C: Inversion of $sd$ states and deformation effects
• Deformed relativistic Hartree-Bogoliubov theory in continuum with point coupling functional: examples of even-even Nd isotopes
• Covariant density functional theory: Reexamining the structure of superheavy nuclei
• Properties of heaviest nuclei with $98\le Z\le 126$ and $134\le N\le 192$
• Multidimensionally-constrained relativistic mean-field study of spontaneous fission: coupling between shape and pairing degrees of freedom
• Superdeformed $\Lambda$ hypernuclei from relativistic mean field models
• Predictive power for superheavy nuclear mass and possible stability beyond the neutron drip line in deformed relativistic Hartree-Bogoliubov theory in continuum
• Study of ground state properties of carbon isotopes with deformed relativistic Hartree-Bogoliubov theory in continuum
• Nonaxial-octupole Y_{32} correlations in N = 150 isotones from multidimensional constrained covariant density functional theories
• Rotating deformed halo nuclei and shape decoupling effects
• Multidimensionally-constrained relativistic mean-field study of triple-humped barriers in actinides
• Tetrahedral shapes of neutron-rich Zr isotopes from multidimensionally-constrained relativistic Hartree-Bogoliubov model
• Effects of high order deformation on superheavy high-$K$ isomers
• Possible bound nuclei beyond the two-neutron drip line in the $50⩽Z⩽70$ region
• Understanding the different rotational behaviors of ${}^{252}$No and ${}^{254}$No
• Neutron drip line in the deformed relativistic Hartree-Bogoliubov theory in continuum: Oxygen to Calcium
• Ground state properties and potential energy surfaces of ${}^{270}$Hs from multidimensionally-constrained relativistic mean field model
• Possible existence of bound nuclei beyond neutron drip lines driven by deformation
• Strength of pairing interaction for hyperons in multistrangeness hypernuclei
• New effective interactions for hypernuclei in density dependent relativistic mean field model
• High-K isomer and the rotational properties in the odd-Z neutron-rich nucleus ${}^{163}$Eu

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