A systematic investigation has been carried out for even-even isotopic series of two superheavy nuclei with Z=124 and Z=126 in the region $160\le N\le 220$, and $162\le N\le 218$, respectively, within the framework of covariant density functional theory (CDFT). Based on the potential energy curves calculated using the explicit density-dependent meson-exchange (DD-ME) and point-coupling (DD-PC) models, many sensitive observables have been analyzed to understand the structural evolution, shape coexistence, and to predict the possible candidates for neutron shell-closure within the isotopic series of Z=124 and Z=126. The shell correction energy and nuclear symmetry energy have been evaluated within the Strutinsky shell correction approach and the Coherent Density Fluctuation Model (CDFM), respectively. All the sensitive observables i.e. two-neutron separation energy, its differential, neutron-pairing energy, single-particle energy levels, and total shell-correction energy reproduce known spherical neutron magic numbers, and present evidence on new deformed neutron magic numbers at N=168, 174 and 178. The symmetry energy shows a direct correlation with the shape of the system. The α-decay chain of four isotopes ${}^{298,302}124$ and ${}^{300,304}126$ have been studied within three different semi-empirical approaches named UNIV2, SemFIS2 and ImSahu, and compared with the available experimental data, FRDM2012 and the WS4 mass model. All the models, DD-ME2, DD-PC1, FRDM2012, and WS4 have predicted around 8α to 10α decay before spontaneous fission (SF) can start.

已对该区域中Z = 124和Z = 126的两个超重核的偶数同位素序列进行了系统研究 $160\le ñ\le 220$和 $162\le ñ\le 218$分别在协变密度泛函理论（CDFT）的框架内。基于使用显式密度依赖介子交换（DD-ME）和点耦合（DD-PC）模型计算出的势能曲线，已分析了许多敏感的观测值，以了解结构演化，形状共存并预测Z = 124和Z = 126的同位素系列内中子壳封闭的可能候选对象。壳校正能和核对称能分别在Strutinsky壳校正方法和相干密度波动模型（CDFM）中进行了评估。所有敏感的可观测值，即两个中子分离能，其微分，中子对能，单粒子能级和总壳校正能，都再现了已知的球形中子魔术数，并提供了有关在N = 168、174和178时新的变形中子幻数的证据。对称能显示出与系统形状直接相关。的四个同位素的α衰变链${}^{298，302}124$ 和 ${}^{300，304}126$已在三种不同的半经验方法UNIV2，SemFIS2和ImSahu中进行了研究，并与可用的实验数据FRDM2012和WS4质量模型进行了比较。所有的模型，DD-ME2，DD-PC1，FRDM2012和WS4已约8预测α至10 α衰变之前自发裂变（SF）可以启动。