Is there objective evidence for quantized spin alignment in superdeformed nuclei?

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Abstract
It is impossible to determine spins for superdeformed bands by fitting the γ-transition energies alone. It is necessary to introduce a model. By using a variable moment of inertia (VMI) model one can estimate spins but cannot rule out the possibility of a ±ħ uncertainty. Therefore, no objective evidence exists requiring the presence of quantized spin alignment in superdeformed nuclei. An alternative hypothesis that all superdeformed nuclei in a given mass region have the same VMI core, and thus essentially no alignment until high-N Coriolis effects become significant, seems to explain the present data.