Trends in the g7/2 and h11/2 neutron single-particle energies in N = 51 isotones

Abstract

The energies of the g7/2 and h11/2 neutron orbitals in N = 51 isotones have been investigated. The single-neutron adding reactions (d,p) and (α, 3He) have been performed on 88Sr, 90Zr and 92Mo targets, at beam energies of 15 MeV and 50 MeV, respectively. These measurements were supplemented by studying the d(86Kr,p)87 Kr reaction at an energy of 10 MeV/u, in inverse kinematics. Absolute cross sections were measured, ℓ assignments made and spectroscopic factors extracted. The energy centroids of the single-particle strength have been deduced and the observed trends are discussed.