The ${}^{113}\mathrm{I}$ nucleus has been studied using the ${}^{58}\mathrm{Ni}{(}^{58}\mathrm{Ni},3p)$ reaction at 250 MeV with the Gammasphere/Microball facility. Gamma-ray three- and four-fold data gated by charged particle combinations were analyzed. Multipolarities of the $\gamma$ rays were assigned following the angular correlation measurements. The present study is focused on the high spin properties, where the structure is dominated by $2p-2h$ excitations across the Z=50 gap. Ten decoupled bands showing the features of smooth band termination were observed; three of those bands are linked to known low-spin states, which allows the identification of configurations by direct comparisons with configuration-dependent cranked Nilsson-Strutinsky calculations. The yrast band, which was linked along with the signature partner, was followed up to ${(101/2\mathrm{}}^{+})$ and $ħ\omega \sim 1.3$ MeV. The other linked band was a negative-parity band observed up to ${(95/2\mathrm{}}^{-}).\mathrm{}$ Tentative configurations for the unlinked bands are discussed. Comparisons with the theoretical results suggest that the band built on a configuration involving the neutron $i_{13/2}$ intruder orbital originating from the N=6 harmonic oscillator subshell was observed in this experiment.

• Received 27 July 2000

DOI:https://doi.org/10.1103/PhysRevC.64.014304