Observation of Excited Superdeformed Bands in132Ceand Evidence for Identical Bands in the Mass 130 Region

Two excited superdeformed (SD) bands have been observed in ${}^{132}\mathrm{Ce}$ using the Eurogam gamma-ray spectrometer. Possible configurations are proposed in terms of particle-hole excitation from a theoretical analysis based on the cranking approximation with the Woods-Saxon deformed potential. From relationships between $\gamma$-ray energies of SD bands in ${}^{132}\mathrm{Ce}$ and ${}^{131}\mathrm{Ce}$, the existence of identical bands and approximately quantized alignments is established in the mass 130 region.