High-spin States in near Stable Nucleus ⁹⁴Nb

High spin states of ⁹⁴Nb have been studied with the ⁸²Se(¹⁸O, p5n)⁹⁴Nb fusion evaporation reaction at beam energy of 82 and 88 MeV. The experiment was performed at the HI-13 tandem accelerator of the China Institute of Atomic Energy. The previously reported level schemes of ⁹⁴Nb have been extended and modified up to an excitation energy of 10.6 MeV and a spin and parity of 24⁽⁻⁾ with 13 new γ-transitions. Based on DCO ratios and linear polarization measurements, spin-parity have been assiged up to the highest level observed. The level structures in ⁹⁴Nb have been interpreted in terms of the shell model calculations performed in the configuration space π(1f_5/2, 2p_3/2, 2p_1/2, 1g_9/2 ) for the protons and ν(2p_1/2, 1g_9/2, 1g_7/2, 2d_5/2 ) for the neutrons, and the neutron proton excitation mechanism of ⁹⁴Nb was discussed.