Puzzling questions about excited superdeformed rotational bands of atomic nuclei are answered by the two-revolving-cluster model.
The two-revolving-cluster model provides explanations of several questions about excited superdeformed bands: restriction to the lanthanons and the Hg-Tl-Pb region and to the smaller values of the neutron number for each element, truncation of the gamma-ray cascades, differences in shape of the lanthanon and Hg-Tl-Pb bands, alignment of quantified spins, and the existence of pairs of bands with nearly identical gamma-ray sequences. A previously unrecognized kind of pairing (intercalation of gamma-ray values) is also reported and a discussion is given of the values of electric quadrupole moments.
Pauling
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Linus Pauling Institute of Science and Medicine, Palo Alto, CA 94306-2025, USA.