The excited levels of ${}^{126}\mathrm{Te}$ have been studied using the $\left(n,n^{\prime }\gamma \right)$ reaction. Excitation functions, $\gamma \gamma$ coincidences, angular distributions, and Doppler shifts were measured for $\gamma$ rays from levels up to an excitation energy of $3.2\mathrm{MeV}$; 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.

• Received 21 April 2004

DOI:https://doi.org/10.1103/PhysRevC.69.064323