Determination of the π1g9/2orbit size inSr88,Zr90, andMo92from inelastic electron scattering

A study of the π1$g_{9/2}$ orbit size in ${}_{}{}^{88}{}_{}{}^{}\mathrm{Sr}$, ${}_{}{}^{90}{}_{}{}^{}\mathrm{Zr}$, and ${}_{}{}^{92}{}_{}{}^{}\mathrm{Mo}$ is presented. The rms radius for the point-proton density is extracted by studying transitions to $8^{+}$ states in these nuclei. The radii are consistently larger than a value determined in a magnetic electron scattering experiment on ${}_{}{}^{93}{}_{}{}^{}\mathrm{Nb}$. A qualitative discussion of the ground state occupation of the π1$g_{9/2}$ orbit based on the transition amplitudes to the $8^{+}$ states is given.