Abstract
The excited levels of $^{126}\mathrm{Te}$ have been studied using the $(n,{n}^{\ensuremath{'}}\ensuremath{\gamma})$ reaction. Excitation functions, $\ensuremath{\gamma}\ensuremath{\gamma}$ coincidences, angular distributions, and Doppler shifts were measured for $\ensuremath{\gamma}$ rays from levels up to an excitation energy of $3.2\phantom{\rule{0.3em}{0ex}}\mathrm{MeV}$; multipole-mixing and branching ratios and transition rates were deduced. Experimental values of electromagnetic transition rates were compared with the anharmonic vibrator model, the general collective model, the neutron-proton interacting boson model with intruder mixing, and particle-core coupling model calculations. No advantage is found in using an intruder description for the low-spin states of $^{126}\mathrm{Te}$. All models used reproduce some features of the level scheme and many transition rates, but the particle-core coupling model was found to have better overall success describing the observed properties of this nucleus.
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