Positron annihilation study on ZnO-based scintillating glasses

Abstract. Positron lifetime of ZnO-based scintillating glasses (55  x)SiO2–45ZnO–xBaF2 (x = 5, 10, 15 mol%) were measured with a conventional fast–fast spectrometer. Three positron lifetime components t1, t2, and t3 are - 0.23 ns, - 0.45 ns, and - 1.6 ns, respectively. All the three positron lifetime components first increase with increasing BaF2 concentration from 5 mol% to 10 mo…