Measurement of γ and conversion electron spectra following the decay of125Sb

Abstract

Relative intensities of \ensuremath{\gamma} rays and conversion electron lines in the decay of ${}^{125}\mathrm{Sb}$ are measured precisely using an HPGe detector and a miniorange electron spectrometer. These data are used to derive the K- and L-shell internal conversion coefficients and to deduce the multipolarities of the respective transitions. A revised level scheme is presented for ${}^{125}\mathrm{Te}$ incorporating 37 transitions between 13 energy levels up to an excitation energy of 675 keV. The newly established levels at 538 and 653 keV complete the hextuplet corresponding to the ${(s}_{1/2}\ensuremath{\bigotimes}{2}^{+})$ and ${(d}_{3/2}\ensuremath{\bigotimes}{2}^{+})$ phonon-coupled configurations.