Delta I=1 staggering in signature partner pairs of super-deformed rotational bands in the A=190 mass region

摘要

Several signature partner pairs in super-deformed rotational bands in the A = 190 mass region have exhibited Delta I = 1 staggering effects in its transition energies. A total of twenty signature partner pairs of super-deformed (SD) rotational bands in the A = 190 mass region were investigated in this study. The intrinsic structure and the band head moment of inertia J(0) of these signature partner pairs were found to be identical. The band head spin I-0 and the band head moment of inertia J(0) of these pairs were assigned by using the VMI (variable moment of inertia) equation. The Delta I = 1 staggering was also examined through the staggering index S(I) formula, where interlinking transition energies between signature partner pairs were experimentally known. A large amplitude staggering was observed in these signature partner pairs. The paper indicates the possibility of a high signature splitting property and will be useful for further studies.