We calculate exotic cluster states for heavy nuclei in the actinide region, using potentials based on an $\alpha -\mathrm{c}\mathrm{o}\mathrm{r}\mathrm{e}$ potential which itself reproduces the properties of the low-lying positive parity states of ${}^{212}$Po. We find that by suitably scaling the parameters of the $\alpha -\mathrm{c}\mathrm{o}\mathrm{r}\mathrm{e}$ potential so as to reproduce the exotic decay lifetimes, we obtain a good description of the spectra and electromagnetic decay properties of the ground state rotational bands of the actinide nuclei.

• Received 17 July 1995

DOI:https://doi.org/10.1103/PhysRevLett.76.380