Lifetimes in ~(124)Te: Examining critical-point symmetry in the Te nuclei

摘要

TheDoppler-shift attenuationmethod following inelastic neutron scatteringwas used to determine the lifetimes of nuclear levels to 3.3-MeV excitation in ~(124)Te. Level energies and spins, γ -ray energies and branching ratios, and multipole-mixing ratios were deduced from measured γ -ray angular distributions at incident neutron energies of 2.40 and 3.30 MeV, γ -ray excitation functions, and γγ coincidence measurements. The newly obtained reduced transition probabilities and level energies for ~(124)Te were compared to critical-point symmetry model predictions. The E(5) and β~4 potential critical-point symmetries were also investigated in ~(122)Te and ~(126)Te.