Abstract
The influence of different doping ions on the emission and scintillation characteristics of PbWO 4 scintillator was studied. In the case of Ce 3+ doping, efficient non-radiative recombination at Ce 3+ sites takes place resulting in a lower light yield and faster luminescence and scintillation response. Th 4+ doping shows all the positive features of trivalent ion doping used previously for PbWO 4 scintillator optimisation. Heavily La 3+ and Gd 3+ doped PbWO 4 crystals (up to several molar percent) a suppressed light yield and subnanosecond scintillation response. Finally, Tb 3+ and Pr 3+ doping results in dominant emission lines at 543 and 602 nm with decay times of about 650 and 61 μs at 295 K, respectively.
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