Luminescence spectroscopy of scintillating glasses doped with Tb³⁺/Ce³⁺ with different concentrations of cerium under photo- and electron excitation

Abstract The luminescence of Li₂O-B₂O₃-P₂O₅-CaF₂ scintillation glass doped Tb³⁺, Ce³⁺ under electron beam excitation are investigated. Changing the cerium concentration of 0.2-1 wt% leads to an increase in luminescence intensity of Ce³⁺ and Tb³⁺ ions. Luminescence decay of cerium time is 30 ns and weakly depends on the ion concentration and the density of the excitation energy. The luminescence spectrum of the Tb³⁺ ions and excitation spectrum are dependent on the concentration of Ce³⁺. The radiative level of cerium ion does not participate in the process of energy transfer from the cerium to terbium. The transfer of energy between Ce³⁺ and Tb³⁺ occurs non-radiatively.