It is universally acknowledged that the Generalized Liquid Drop Model (GLDM) has two advantages over other α decay theoretical models: introduction of the quasimolecular shape mechanism and proximity energy. In the past few decades, the original proximity energy has been improved by numerous works. In the present work, the different improvements of proximity energy are examined when they are applied to the GLDM for enhancing the calculation accuracy and prediction ability of α decay half-lives for known and unsynthesized superheavy nuclei. The calculations of α half-lives have systematic improvements in reproducing experimental data after choosing a more suitable proximity energy for application to the GLDM. Encouraged by this, the α decay half-lives of even-even superheavy nuclei with Z=112-122 are predicted by the GLDM with a more suitable proximity energy. The predictions are consistent with calculations by the improved Royer formula and the universal decay law. In addition, the features of the predicted α decay half-lives imply that the next double magic nucleus after ²⁰⁸Pb is ²⁹⁸Fl.

众所周知，广义液滴模型（GLDM）与其他α衰变理论模型相比具有两个优点：引入了准分子形状机制和邻近能量。在过去的几十年里，原始的邻近能量通过无数的工作得到了改进。在目前的工作中，研究了将邻近能量的不同改进应用于 GLDM 以提高已知和未合成超重核的α衰变半衰期的计算精度和预测能力。在选择更合适的接近能量应用于 GLDM 后， α半衰期的计算在再现实验数据方面有系统的改进。受此鼓舞，αZ = 112-122的偶偶超重核的衰变半衰期由 GLDM 预测，具有更合适的邻近能量。预测与改进的 Royer 公式和通用衰减定律的计算一致。此外，预测的α衰变半衰期的特征意味着²⁰⁸ Pb 之后的下一个双魔核是²⁹⁸ Fl。