There are three accepted next proton closures beyond the lead atomic number: $Z=114$, 120, and 126. The heaviest one, $Z=126$, is analyzed within its decay process. A binary adapted macroscopic-microscopic method is used to obtain all fission barriers along different decay channels. The whole range of mass asymmetry is calculated for the fragment emission. The deformed two-center shell model is used to obtain the proton and neutron single-particle energy levels. The levels are used as input for the shell correction energy. The binary Yukawa-plus-exponential model leads to calculation of the macroscopic part of the deformation energy. The dynamics is completed with the Werner-Wheeler mass tensor components. The Wentzel-Kramers-Brillouin (WKB) method provides the penetrabilities and therefore the half-lives for all possible decay channels of ${}^{310}126$.

• Received 14 November 2023
• Accepted 23 January 2024

DOI:https://doi.org/10.1103/PhysRevC.109.024611