Abstract
Cerium doped lutetium pyrosilicateLu2Si2O7:Ce3+ (LPS) single crystals, prepared by the floating zone technique, presentgood scintillation properties, with a light yield between 15 000 and31 000 photons MeV−1. However,some LPS crystals prepared by the Czochralski process exhibited quite a low scintillation light output,below 2000 photons MeV−1.Electron paramagnetic resonance experiments show that this scintillation quenching is due to iridiumimpurities (Ir3+) originating from the iridium crucible.
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