Systematics of signature inversion in odd-odd nuclei in the mass regions A=80 and A=160 -: art. no. 014313

Based on an axially symmetric rotor plus quasiparticles model, the study of the signature inversion (SI) in odd-odd nuclei in the mass region A = 160 is extended to include the region A = 80. In spite of many differences between the two mass regions, the calculation results show that the possible SI mechanism, which has been confirmed by the calculation of odd-odd nuclei in the A=160 region (i.e., the competition between the n-p interaction and the Coriolis force in low-K space) is also appropriate for odd-odd nuclei in the A = 80 region. This seems to indicate that there may be a universal mechanism of SI in odd-odd nuclei for different mass regions.