Disintegration of ${\mathrm{Te}}^{121}$ and ${\mathrm{Te}}^{123}$ Isomers

Line intensities in the conversion electron spectra of ${\mathrm{Te}}^{121}$ and ${\mathrm{Te}}^{123}$ were evaluated in a variable field, 180° focusing beta-ray spectrograph. Electron-electron coincidences were obtained between the transition pairs 82-213 kev in ${\mathrm{Te}}^{121}$ and 88.5-159 kev in ${\mathrm{Te}}^{123}$. Decay schemes for the two isomers are shown.