Mixing of two-quasineutron and two-quasiproton K~π=6~+ configurations in the vicinity of ~(174)Yb

In the framework of the projected shell model, we investigate the competition between the two-quasineutron and two-quasiproton K~π=6~+ states in the ytterbium isotopes and N=104 isotones adjacent to ~(174)Yb. The ~(174)Yb results are compared with the experimental data. The K~π=6~+ isomer observed in ~(174)Yb is assigned as an admixture of the ν7/2~-[514]×ν5/2~-[512] and π7/2~+[404]×π5/2~+[402] intrinsic structure, which explains the experimental |gK-gR| value. Similar mixing would appear in ~(172)Yb, ~(176)Hf, and ~(178)W. The low-lying K~π=6~+ states are also predicted in ~(170)-~(178)Yb.National Natural Science Foundation of China中国科技核心期刊(ISTIC)中国科学引文数据库(CSCD)3034102-1-034102-43