High-spin states in ${}_{}{}^{92}{}_{}{}^{}\mathrm{Zr}$

High-spin states have been investigated with the ${}_{}{}^{88}{}_{}{}^{}\mathrm{Sr}({}_{}{}^7{}_{}{}^{}\mathrm{Li},p2n){}_{}{}^{92}{}_{}{}^{}\mathrm{Zr}$ reaction by $\gamma$-$\gamma$ coincidence, $\gamma$-ray angular distribution, and pulsed beam-$\gamma$ timing measurements with Ge(Li) detectors. Decay schemes, level energies, and spin-parity information were obtained for ${}_{}{}^{92}{}_{}{}^{}\mathrm{Zr}$ from the data. The high-spin states involving the ${\left(\pi 1g_{\frac{9}{2}}\right)}^2{\left(\nu 2d_{\frac{5}{2}}\right)}^2$ configuration were identified, with the (${12}^{+}$) member being at 4947 keV. Tentative identification of the members of the $\left(\pi 1g_{\frac{9}{2}}\pi 2p_{\frac{1}{2}}\right){\left(\nu 2d_{\frac{5}{2}}\right)}^2$ configuration has also been made. The observed experimental levels in ${}_{}{}^{92}{}_{}{}^{}\mathrm{Zr}$ are compared with recent theoretical calculations.

NUCLEAR REACTIONS ${}_{}{}^{88}{}_{}{}^{}\mathrm{Sr}({}_{}{}^7{}_{}{}^{}\mathrm{Li},p2n)E_{\mathrm{Li}}=34\mathrm{}$ MeV; measured $\gamma$-$\gamma$ coincidences, $\gamma (E,\theta ,t)$; deduced level scheme in ${}_{}{}^{92}{}_{}{}^{}\mathrm{Zr}$, $\gamma$ multipolarities, $J^{\pi }$. Natural target, Ge(Li) detectors.