High-spin structure ofRu102

Abstract

High-spin states in the nucleus $^{102}\mathrm{Ru}$ have been investigated via the $^{96}\mathrm{Zr}$($^{13}\mathrm{C}$,\ensuremath{\alpha}3n) reaction at beam energies of 51 and 58 MeV, using the euroball IV \ensuremath{\gamma}-ray spectrometer and the diamant charged particle array. Several new high-spin bands have been established. The ground-state band has been extended up to ${E}_{x}~12$ MeV with ${I}^{\ensuremath{\pi}}=({26}^{+}$); the previously published negative-parity bands have been extended up to ${E}_{x}~11$ and \ensuremath{\sim} 9 MeV with ${I}^{\ensuremath{\pi}}=({23}^{\ensuremath{-}}$) and $({20}^{\ensuremath{-}})$, respectively. The deduced high-spin structure has been compared with Woods-Saxon total Routhian surface calculations and, on the basis of the measured Routhians, aligned angular momenta, and $B(M1)/B(E2)$ ratios, $\ensuremath{\nu}{h}_{11/2}({g}_{7/2},{d}_{5/2}$) configurations are suggested for the negative-parity structures.