The Effect of Codopants on Spectral-Kinetic Characteristics of Luminescence of Scintillation Glasses Doped with Terbium Ions

摘要

The effect of Ce3+ and Pr3+ ions on spectral-kinetic characteristics of luminescence of lithium-phosphate-borate glasses is studied. It is shown that terbium ion luminescence caused by transitions from D-5(3) and D-5(4) multiplets to the ground F-7(J) term is detected in samples containing Tb3+/Ce3+ and Tb3+/Pr3+. It has been found that an increase in the concentration of cerium ions from 0.2 to 1 wt % leads to an increase in the intensity of main luminescence bands of terbium ions. In Tb3+/Pr3+ glasses, a decrease in the relative light yield is observed with an increase in the concentration of Pr3+ ions. Processes of energy transfer between Tb3+/Ce3+ and Tb3+/Pr3+ ions are discussed.