Consequences of omitting spin-orbit partner configurations forB(E2)values and quadrupole moments in nuclei

Abstract

Calculations of B(E2)'s and quadrupole moments in the shell g 9/2 region below 100 Sn are hampered by the fact that the inclusion of the g 7/2 configuration leads to model spaces that are too large to handle. Understanding the impact of specific orbit space functions in large-scale shell-model (LSSM) calculations helps to shed light on the validity of the results that are obtained. We therefore examine lighter nuclei if the f − p region where one can easily include all the orbitals, f 7/2 , p 3/2 , p 1/2 and f 5/2 . We perform such calculations but then take a step back and exclude the f 5/2 orbital. By comparing the two calculations we can hope to get insight into the importance of the missing spin-orbital partner in other regions.