Superdeformation in ${}_{}{}^{146}{}_{}{}^{}\mathrm{Gd}$ has been studied using the EUROGAM I spectrometer at the NSF Daresbury. The two known superdeformed (SD) bands in ${}_{}{}^{146}{}_{}{}^{}\mathrm{Gd}$ have been extended to 15 transitions. All transitions within each band were clearly observed in coincidence among each other and accurate γ-ray energies were determined. The association of both bands to ${}_{}{}^{146}{}_{}{}^{}\mathrm{Gd}$ has been unambiguously confirmed. In addition a band with energies corresponding to the first known SD band in ${}_{}{}^{147}{}_{}{}^{}\mathrm{Gd}$ was also observed. Several methods to search for new SD bands were applied.

• Received 13 April 1995

DOI:https://doi.org/10.1103/PhysRevC.52.1302