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

Abstract

We investigate the effects of higher-order deformations (and 10) on the ground state properties of superheavy nuclei (SHN) near the doubly magic deformed nucleus using the multidimensionally-constrained relativistic mean-field (MDC-RMF) model with five effective interactions: PC-PK1, PK1, NL3∗, DD-ME2, and PKDD. The doubly magic properties of include large energy gaps at and in the single-particle spectra. By investigating the binding energies and single-particle levels of in the multidimensional deformation space, we find that, among these higher-order deformations, the deformation has the greatest impact on the binding energy and influences the shell gaps considerably. Similar conclusions hold for other SHN near. Our calculations demonstrate that the deformation must be considered when studying SHN using MDC-RMF.