High-spin neutron-hole states inTi50andCr52

Energy levels arising from the 1p7h configuration of ${}_{}{}^{50}{}_{}{}^{}\mathrm{Ti}$ and the 1p5h configuration of ${}_{}{}^{52}{}_{}{}^{}\mathrm{Cr}$ are calculated with an effective interaction which previously has been shown to reproduce the energies of intruder states in mass 53-57 nuclei. Calculated energies for yrast levels of spin up to 11 agree closely with experimental values from ($\alpha ,2n\gamma$) reactions. An effective $M1\mathrm{}$ operator determined by a least-squares fit to data from $N=29\mathrm{}$ nuclei is used in the calculation of electromagnetic transition rates, and it is shown that only weak configuration mixing is required to account for transition rates which have been measured in ${}_{}{}^{52}{}_{}{}^{}\mathrm{Cr}$.