Based on the arguments of excitation energy systematics and alignment additivity rule, the spins of the lowest observed states of the (${\mathit{h}}_{11/2}$${)}_{\mathit{p}}$(${\mathit{i}}_{13/2}$${)}_{\mathit{n}}$ bands in ${}_{}{}^{156}{}_{}{}^{}\mathrm{Tb}$, ${}_{}{}^{158}{}_{}{}^{}\mathrm{Ho}$, ${}_{}{}^{166}{}_{}{}^{}\mathrm{Lu}$, and ${}_{}{}^{168}{}_{}{}^{}\mathrm{Ta}$ are assigned as 8, 9, 8, and 9 instead of the previous assignments of 6, 6, 7, and 10, respectively. Taking these new spin assignments and the preliminary experimental results of ${}_{}{}^{162,164}{}_{}{}^{}\mathrm{Lu}$ into account, the systematic features of the signature inversion of the (${\mathit{h}}_{11/2}$${)}_{\mathit{p}}$(${\mathit{i}}_{13/2}$${)}_{\mathit{n}}$ bands of the doubly odd nuclei in the lighter rare-earth region (around A∼160) are presented.

• Received 18 May 1995

DOI:https://doi.org/10.1103/PhysRevC.52.2514