Decay ofEu155,Sm153,Sn125, andBr82

The energies of the beta and gamma rays associated with the decay of ${\mathrm{Eu}}^{155}$, ${\mathrm{Sm}}^{153}$, ${\mathrm{Sn}}^{125}$, and ${\mathrm{Br}}^{82}$ have been determined by scintillation spectrometry, and coincidence relationships have been investigated when possible. In most instances, values of $log\mathrm{ft}$ for the beta spectra have been determined from a consideration of the decay scheme and the relative intensities of gamma rays. The results obtained have been interpreted as indicating the following excited energy states of the residual nuclei. ${\mathrm{Gd}}^{155}$: 18 and 102 kev; ${\mathrm{Eu}}^{153}$: 100, 170, and 700 kev; ${\mathrm{Sb}}^{125}$: 1070, 1410, 1880, 1970, and 2110 kev; ${\mathrm{Kr}}^{82}$: 770, 1450, 1800, 2060, and 2620 kev.