Aligned neutron--proton pairs in $N\sim Z$ nuclei
arXiv:1207.1581 · doi:10.1088/0031-8949/2012/T150/014042
Abstract
It is argued that $N\sim Z$ nuclei with $90\leq A\leq100$ can be interpreted in terms of aligned neutron--proton pairs with angular momentum $J=2j$ and isospin T=0. Based on this observation, a version of the interacting boson model is formulated in terms of isoscalar high-spin bosons. To illustrate its possible use, the model is applied to the $21^+$ isomer in $^{94}$Ag.
Accepted for publication in Physica Scripta T, Proceedings of the Nordic Conference on Nuclear Physics 2011, Stockholm, June 13-17