Identification of the unfavoredN=7 superdeformed band inHg191

A new superdeformed band has been identified in ${}_{}{}^{191}{}_{}{}^{}\mathrm{Hg}$ bringing the total number of bands observed in this nucleus to four. The new band has properties similar to those of a superdeformed band reported recently in ${}_{}{}^{193}{}_{}{}^{}\mathrm{Hg}$. Both bands are believed to be built on the unfavored signature of the ${\mathit{j}}_{15/2}$ intruder configuration. Comparisons between the data and cranked Woods-Saxon calculations highlight the strengths and weaknesses of theory in describing high-N orbitals at large deformation.