Complete Particle-Core Multiplets Populated inRu99by the (He3,2nγ) Reaction

Extensive sets of yrast and nonyrast states in ${}_{}{}^{99}{}_{}{}^{}\mathrm{Ru}$ have been populated by the reaction ${}_{}{}^{98}{}_{}{}^{}\mathrm{Mo}({}_{}{}^3{}_{}{}^{}\mathrm{He}, 2n\gamma ){}_{}{}^{99}{}_{}{}^{}\mathrm{Ru}$. The population of nonyrast states is attributable to the characteristics of the reaction rather than the specifics of the nuclear structure involved. Several complete particle-core multiplets have been successfully interpreted with a particle-rotor model.