Single-particle states inTm151andEr151: Systematics of neutron states inN=83 nuclei

Abstract
With the use of mass-separated sources, the β-decay properties of Yb151 and Tm151 were investigated. The h11/2, s1/2, d3/2, d5/2, and g7/2 single-proton states in Tm151 and the f7/2, h9/2, p3/2, i13/2, and probably the p1/2 single-neutron states in Er151 were identified. Systematics of neutron states in even-Z N=83 isotones are compared with predictions of spherical Hartree-Fock-Bogoliubov calculations.