Ground state properties and potential energy surfaces of ${}^{270}$Hs from multidimensionally-constrained relativistic mean field model

Abstract

We study the ground state properties, potential energy curves and potential energy surfaces of the superheavy nucleus ${}^{270}$Hs by using the multidimensionally-constrained relativistic mean-field model with the effective interaction PC-PK1. The binding energy, size and shape as well as single particle shell structure corresponding to the ground state of this nucleus are obtained. ${}^{270}$Hs is well deformed and exhibits deformed doubly magic feature in the single neutron and proton level schemes. One-dimensional potential energy curves and two-dimensional potential energy surfaces are calculated for ${}^{270}$Hs with various spatial symmetries imposed. We investigate in detail the effects of the reflection asymmetric and triaxial distortions on the fission barrier and fission path of ${}^{270}$Hs. When the axial symmetry is imposed, the reflection symmetric and reflection asymmetric fission barriers both show a double-hump structure and the former is higher. However, when triaxial shapes are allowed the reflection symmetric barrier is lowered very much and then the reflection symmetric fission path becomes favorable.

13 pages, 8 figures

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Cited by in corpus (9)

• Beyond-mean-field approaches for nuclear neutrinoless double beta decay in the standard mechanism
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• Angular momentum and parity projected multidimensionally constrained relativistic Hartree-Bogoliubov model
• Microscopic study of higher-order deformation effects on the ground states of superheavy nuclei around ${}^{270}$Hs
• Principal components of nuclear mass models
• Potential energy surfaces and fission fragment mass yields of even-even superheavy nuclei
• Nucleon momentum distribution of ${}^{56}\text{Fe}$ from the axially deformed relativistic mean-field model with nucleon--nucleon correlations
• The interplay of single-particle and collective motions in the low-lying states of ${}_{\Lambda }^{21}$Ne with quadrupole-octupole correlations
• Ground state and fission properties of even-$A$ uranium isotopes from multidimensionally-constrained relativistic mean field model