Shell structure and spontaneous decay of superheavy Z=124 isotopes with the deformed relativistic Hartree-Bogoliubov theory in continuum
Abstract
Shell structure and spontaneous decay of Z = 124 isotopes are systematically investigated using the deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc) with the PC-PK1 density functional. By accounting for deformation and continuum effects, the neutron drip line is predicted to be located at N = 320, and eight potential multi-neutron emitters beyond the neutron drip line are identified. The results, compared with the spherically constrained case, highlight the critical role of deformation effects in determining the ground-state properties of superheavy nuclei. In addition, potential neutron shell closures emerge at N = 258 and $350$, alongside subshell closures at N = 232 and $320$. The results disfavor Z = 124 as a possible proton magic number and suggest Z = 120 and $138$ as more favorable candidates for proton shell closures in the superheavy region. Finally, the competition between α decay, β decay, and spontaneous fission is analyzed by calculating half-lives within various semi-empirical formulas. The results indicate that α decay is the predominant mode on the proton-rich side, whereas spontaneous fission and β- decay gradually become dominant with increasing neutron number.
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BibTeX
@misc{wang2026shell,
title = {{Shell structure and spontaneous decay of superheavy $Z=124$ isotopes with the deformed relativistic Hartree-Bogoliubov theory in continuum}},
author = {Yumeng Wang and Lang Liu and Cong Pan},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.27737},
eprint = {2609.27737},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.27737},
}
RIS
TY - UNPB
TI - Shell structure and spontaneous decay of superheavy Z=124 isotopes with the deformed relativistic Hartree-Bogoliubov theory in continuum
AU - Yumeng Wang
AU - Lang Liu
AU - Cong Pan
PY - 2026
DA - 2026/09/23
PB - arXiv
DO - 10.48550/arxiv.2609.27737
UR - https://arxiv.org/abs/2609.27737
AB - Shell structure and spontaneous decay of Z = 124 isotopes are systematically investigated using the deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc) with the PC-PK1 density functional. By accounting for deformation and continuum effects, the neutron drip line is predicted to be located at N = 320, and eight potential multi-neutron emitters beyond the neutron drip line are identified. The results, compared with the spherically constrained case, highlight the critical role of deformation effects in determining the ground-state properties of superheavy nuclei. In addition, potential neutron shell closures emerge at N = 258 and $350$, alongside subshell closures at N = 232 and $320$. The results disfavor Z = 124 as a possible proton magic number and suggest Z = 120 and $138$ as more favorable candidates for proton shell closures in the superheavy region. Finally, the competition between α decay, β decay, and spontaneous fission is analyzed by calculating half-lives within various semi-empirical formulas. The results indicate that α decay is the predominant mode on the proton-rich side, whereas spontaneous fission and β^- decay gradually become dominant with increasing neutron number.
ER -