Abstract
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.
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