Abstract
A novel mixed crystal scintillator of (Gd0.9Lu0.1)2Si2O7:0.1%Ce (Lu-GPS:Ce) was grown by floating zone method. The structure of as grown sample was determined through XRD to be triclinic. Its photoluminescence (PL) and scintillation properties, were evaluated in this paper. The PL properties were studied through Vacuum ultra-violet (VUV) excitation, emission and PL decay results. Scintillation properties were investigated through X-ray excited luminescence (XEL), scintillation decay curves and pulse spectrum under γ-ray excitation. The absolute light yield of as grown Lu-GPS:Ce sample is 16,600ph/MeV. It is found that non-radiative energy transfer from Gd3+ to Ce3+ occurs, leading slow component in the PL and scintillation process.
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