Observation ofC46rand Testing the Isobaric Multiplet Mass Equation at High Spin

The ground state band in ${}^{46}\mathrm{Cr}$ and the isospin $T=1\mathrm{}$ band in ${}^{46}\mathrm{V}$ have been delineated up to $I^{\pi }{=10\mathrm{}}^{+}$ (tentatively ${12}^{+}$). These observations complete the highest spin $T=1\mathrm{}$ isospin triplet known. Following the isobaric multiplet mass equation, a combination of level energies in ${}^{46}\mathrm{Cr}$, ${}^{46}\mathrm{Ti}$, and ${}^{46}\mathrm{V}$ are taken to highlight the angular momentum dependence of the isovector and isotensor parts of the interaction. The results are compared with full- $\mathrm{fp}$-space shell model calculations. The influence of the one-body and two-body contributions to the isovector energy difference are investigated.