An extended level scheme of109Sn is presented showing high-spin states up to Ex≈ 8 MeV and spins up toJπ=(41/2+). Their decay to the 5/2+ ground state has been observed identifying a 12.8 keV 7/2+ → 5/2+ transition. A half-life of T1/2=7(1) ns has been measured for the 17/2+ state atEx=2114 keV. The experimental data are compared with the predictions of shell-model calculations.
Käubler, L., Prade, H., Reif, J., Schwengner, R., Winter, G., Grawe, H., ... Spohr, K. M. (1995). High-spin states in $^109Sn$ and their decay to the ground state. Zeitschrift Für Physik A - Hadrons and Nuclei, 351(2), 123-124. https://doi.org/10.1007/BF01289517