Unexpected alignment patterns in high-j intruder bands evidence for a strong residual neutron proton interaction

摘要

The alignment of h(sub 11/12) protons in (nu)i(sub 13/2) intruder bands in mass A = 130 region is investigated. The lack of a clear h(sub 11/12) band crossing is compared with the alignment pattern of i(sub 13/2) neutrons in (pi)i(sub 13/2) intruder bands in mass A = 180 region. The very smooth rise in angular momentum in the intruder bands is related to a possible neutron proton interaction between the single intruder orbital and the aligned two-quasiparticle configuration. 36 refs., 3 figs. (ERA citation 16:002022)