The yrast band in the heavy \(N = Z\) nucleus \(^{88}\)Ru is studied in the framework of the \(\alpha \)-cluster model in combination with double-folding potentials. It is found that the excitation energies of the yrast band in \(^{88}\)Ru can be nicely described within the \(\alpha \)-cluster approach using a smooth and mildly L-dependent adjustment of the potential strength. This result is similar to well-established \(\alpha \)-cluster states in nuclei with a (magic core \(\otimes \)\(\alpha \)) structure. Contrary, the yrast bands in neighboring \(N \ne Z\) nuclei deviate from such a typical \(\alpha \)-cluster behavior. Finally, the \(\alpha \)-cluster model predicts reduced transition strengths of about 10 Weisskopf units for intraband transitions between low-lying states in the yrast band of \(^{88}\)Ru.

中文翻译：

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重N = Z核中的Yrast带$$ ^ {88} $$ 88 Ru：$$ \ alpha $$α-聚类方法

在\（\ alpha \）-簇模型的框架中结合双折叠势，研究了重\（N = Z \）核\（^ {88} \） Ru中的yrast带。发现在（（α {88}）） Ru中的拉谱带的激发能可以在（（alpha））聚类方法中使用势能的平滑且轻度依赖L的调整很好地描述。此结果类似于具有（魔术核\（\ otimes \）\（\ alpha \））结构的核中成熟的\（\ alpha \）-簇状态。相反，相邻\（N \ ne Z \）中的拉斯特带原子核偏离这种典型的\（\ alpha \）-簇行为。最后，\（\ alpha \）-簇模型预测，在\（^ {88} \） Ru的拉拉带低洼状态之间的带内跃迁，过渡强度将降低约10 Weisskopf单位。