Re-discussion of the spin assignments of the superdeformed bands in A approximate to 190 region (III) doubly odd superdeformed nuclei

The influence of the fluctuation in gamma-transition energies and the Delta I = 1 staggering on the spin assignment of superdeformed band is investigated for the doubly odd nuclei in mass A approximate to 190 region. The extracted fluctuations in gamma-transition energies are not too large, implying a weak influence on their spin assignments except for the fitting parameters and precisions. In addition, the Delta I = 1 staggering in superdeformed signature partner pairs of doubly odd nuclei behaves differently from that in odd-A nuclei and can be understood in the framework of the collective model. The existence of Delta I = 1 staggering also exerts no influence on the spin assignment except for a renormalization of fitting parameters. A modified ab-expresion valid in doubly odd nuclei is proposed. The smoothed transition energies are employed to assign the spins of these superdeformed bands by the ab-fitting and its modification.Physics, NuclearPhysics, Particles & FieldsSCI(E)中文核心期刊要目总览(PKU)0ARTICLE121209-12152