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Nuclei with few valence nucleons outside the Z=38 and N=50 core provide good testing grounds for the shell model.The low-lying states of such nuclei with A≈90 are dominated by proton excitations in the (2p1/2,1g9/2) subshell or aligning the spins of the unpaired particles and
Nuclei with few valence nucleons outside the Z = 38 and N = 50 core provide good testing grounds for the shell model. The low-lying states of such nuclei with A≈90 are dominated by proton excitations in the (2p1 / 2, 1g9 / 2) subshell or aligning the spins of the unpaired particles and