Study of optical interaction between UO₂⁺⁺ and Ho³⁺ in zinc phosphate glass

A study of Non-radiative energy transfer in UO₂-Ho system in zinc phosphate glass has been done by observing the steady state emission of UO₂⁺⁺ with varying concentration of Ho³⁺ in zinc phosphate glass at room temperature. It has been observed that UO₂⁺⁺ ion emission intensity decreases with increasing Ho³⁺ concentration resulting in a non-radiative energy transfer from UO₂⁺⁺ to Ho³⁺. The energy transfer mechanism for the systems is confirmed to be electric dipole-dipole in nature according to Fong-Diestler's, Forster and Dexter's and Van Uitert's theory. The donor-acceptor distances (D_D→A) and transfer efficiencies (η), as well as energy transfer probabilities (P_da) in presence of different acceptor concentration, have been calculated. (author)