The nuclear superdeformed rotational bands in the $A\sim 190$ region were systematically analyzed by using the Harris two-parameter formula and the ab expression. Similar to the situation in normally deformed nuclei, there exists obvious and systematic deviation of the Harris formula from the experiment. In contrast, the prediction of the $\mathrm{ab}$ formula is very close to the experiment, and may be conveniently used for the description of both normally deformed and superdeformed bands.

• Received 30 May 1997

DOI:https://doi.org/10.1103/PhysRevC.56.2523