High-spin states in $^{88}$Kr

High-spin states in $^{88}$Kr have been studied following the fission of the $^{226}$Th compound nucleus formed in a fusion-evaporation reaction ($^{18}$O at 91~MeV on $^{208}$Pb). The Gammasphere array was used to detect $\gamma$-ray coincidences. High-spin states up to spin (14$^{+}$) and $\sim$8~MeV excitation energy have been established. The level scheme reported for $^{88}$Kr in the spontaneous fission of $^{248}$Cm~[1] has been enriched and extended to higher spin and excitation energies. Differences between the level scheme reported in~[1] and that obtained in the present work will be discussed. The observed experimental states are also compared with theoretical shell-model and interacting-boson-model-2 calculations. This work has been supported by the U.S. Department of Energy under Contracts No. DE-AC52-06NA25396 (LANL), W-7405-ENG-48 (LLNL) and AC03-76SF00098 (LBNL) and by the National Science Foundation (Rutgers). \\ \noindent [1] T. Rz\c{a}ca-Urban {\it et al.}, Eur. Phys. J. A {\bf 9}, 165 (2000).