A number of inhibited electric-quadrupole transitions have been found in odd-$N$ nuclei, and their lifetimes have been measured. The pairing-plus-quadrupole model predicts a correlation between these lifetimes and the shell-model occupation numbers which can be obtained from pickup and stripping reactions. The correlation observed is about that expected from the accuracy of the data on occupation numbers.

NUCLEAR REACTIONS $d$, $\alpha$, ${}_{}{}^3{}_{}{}^{}\mathrm{He}$, $E_{\alpha }=12\mathrm{}$ MeV, pulsed beam, measured $E2\mathrm{}$ transition rates in ${}_{}{}^{63}{}_{}{}^{}\mathrm{Ni}$, ${}_{}{}^{65}{}_{}{}^{}\mathrm{Ni}$, ${}_{}{}^{99}{}_{}{}^{}\mathrm{Mo}$, ${}_{}{}^{103}{}_{}{}^{}\mathrm{Ru}$, ${}_{}{}^{105}{}_{}{}^{}\mathrm{Ru}$, ${}_{}{}^{107}{}_{}{}^{}\mathrm{Pd}$, ${}_{}{}^{108}{}_{}{}^{}\mathrm{Pd}$, ${}_{}{}^{109}{}_{}{}^{}\mathrm{Cd}$, ${}_{}{}^{111}{}_{}{}^{}\mathrm{Sn}$, ${}_{}{}^{115}{}_{}{}^{}\mathrm{Sn}$ compared to prediction pairing-plus-quadrupole model.

• Received 5 January 1978

DOI:https://doi.org/10.1103/PhysRevC.17.2076