Energy Levels inRb85andRb87from then,n′γReaction

High-resolution measurements of the $\gamma$ rays following neutron inelastic scattering in ${}_{}{}^{85}{}_{}{}^{}\mathrm{Rb}$ and ${}_{}{}^{87}{}_{}{}^{}\mathrm{Rb}$ have been made for neutron energies between 0.3 and 2.2 MeV. An enriched ${}_{}{}^{85}{}_{}{}^{}\mathrm{Rb}$ scatterer was used for isotopic identification. Eight new levels were assigned in ${}_{}{}^{85}{}_{}{}^{}\mathrm{Rb}$ below 1445 keV excitation and two new levels below 1739 keV were observed in ${}_{}{}^{87}{}_{}{}^{}\mathrm{Rb}$. Branching ratios and differential $\gamma$-ray production cross sections at 95° were also determined.