Slow components in the photoluminescence and scintillation decays of PbWO₄ single crystals

Abstract

Abstract The decay kinetics of PbWO 4 luminescence and scintillation is investigated in a broad time scale 10 −9 to 10 −3 mainly at room temperature using a selected set of PbWO 4 crystals. The light sum released in different time gates is estimated showing rather high content of slow recombination processes related mainly to the green PbWO 4 emission component. Correlations are found among the absolute green emission intensity, crystal light yield, and the amplitude of very slow processes in the PbWO 4 scintillation decay.