Figure 1

Neutron SPE for ${}^{91-99}\mathrm{Zr}$ isotopes: experiment for $A=91$ to 97 [10], and IBFM for ${}^{99}\mathrm{Zr}$: filled symbols, present calculations, arrows showing the modification of values from [2, 9]; open symbols (left) [5]; gray-filled symbols (right) [3, 4]. Note that the SPE of $\nu h_{11/2}$ in our calculations was chosen to reproduce the relative position of the positive- and negative-parity states calculated with the same Hamiltonian.