The α-decay half-lives of nihonium, ^{279 − 284}Nh, isotopes and their α-decay products are studied by employing the density-dependent cluster model. The Wentzel-Kramers-Brillouin semiclassical approximation including the Bohr-Sommerfeld quantization condition is adopted in the evaluation of the α-decay widths. The double-folding α-daughter potential was determined using the effective M3Y-Paris nucleon-nucleon (NN) interaction. Both spherical and deformed shapes for the daughter nuclei are considered with the zero-range exchange contribution of the NN interaction. Investigations of the effects of nonlocality on α-decay half-lives have been studied through the finite-range exchange part of the NN interaction. We found that the inclusion of the finite-range exchange part decreases α-decay half-lives as compared with those values using the zero-range calculations. The inclusion of deformation degrees of freedom in the daughter nuclei reduces the α-decay half-lives as compared with spherical shape. The calculated α-decay half-lives are compared with other theoretical models and they are in good agreement. The competition between α-decay and spontaneous fission is studied and the possible decay modes are presented for unknown nuclei.

中文翻译：

---

基于有限范围NN相互作用的超重核Nh的α衰变链

该α nihonium的衰变半衰期，^{279 - 284} NH，同位素及其α衰变的产品通过采用取决于密度的集群模式研究。在评估α衰变宽度时，采用了包括Bohr-Sommerfeld量化条件在内的Wentzel-Kramers-Brillouin半经典近似。使用有效的M3Y-巴黎核仁-核仁（NN）相互作用确定双折叠α-子电位。子核的球形和变形形状都考虑了NN相互作用的零范围交换贡献。关于非局部性对α的影响的研究通过神经网络相互作用的有限范围交换部分研究了衰变半衰期。我们发现，与使用零范围计算的值相比，包含有限范围交换部分会减少α衰变半衰期。与球形相比，子核中包含变形自由度降低了α衰变半衰期。将计算出的α衰变半衰期与其他理论模型进行比较，它们具有很好的一致性。研究了α衰变与自发裂变之间的竞争，并提出了未知原子核的可能衰变模式。