Ground-state properties of superheavy $Z=122$ isotopes within the deformed relativistic Hartree-Bogoliubov theory in continuum

TL;DR

This paper investigates the ground-state properties of superheavy Z=122 isotopes using the deformed relativistic Hartree-Bogoliubov theory in continuum, comparing results with other models and analyzing nuclear stability and magic numbers.

Contribution

It introduces a comprehensive analysis of superheavy Z=122 isotopes with the DRHBc model, including deformation effects and drip line predictions, enhancing understanding of their structure and stability.

Findings

Identification of potential magic numbers N=184, 258, 350.

Determination of proton and neutron drip lines for Z=122 isotopes.

Analysis of single-particle levels and deformation evolution with neutron number.

Abstract

The ground-state properties of superheavy $Z = 122$ isotopes are investigated using the deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc). Bulk properties, including binding energies, Fermi energies, nucleon separation energies, quadrupole deformations, and root-mean-square radii, are calculated. The results are compared with those obtained from the relativistic continuum Hartree-Bogoliubov (RCHB) theory. By examining the dependence on the angular-momentum cutoff and the effects of triaxial and octupole deformations, a strategy for determining the ground states is suggested. Furthermore, based on an analysis of the Fermi and nucleon separation energies, the proton and neutron drip lines for $Z = 122$ isotopes are determined within both the DRHBc and RCHB frameworks. The possible magic numbers $N=184$, 258, and 350 are also suggested. Finally, the evolution of single-particle levels, deformation, charge and neutron radii as well as average pairing gaps with increasing neutron number, is discussed.