Aligned neutron-proton pairs in $Nsim Z$ nuclei

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1 Théorie GANIL - Grand Accélérateur National d-Ions Lourds

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.

keyword : ACTI

Author: P. Van Isacker -

Source: https://hal.archives-ouvertes.fr/