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Rare Earth (RE) such as Y, La, Sc and Gd ions doped Ce:Lu2SiO5(LSO) crystals, were grown by Czochralski method. The concentrations of these RE ions in LSO crystals were measured, and their segregation coefficients were calculated according to the concentrations. La3+was found to be helpful to increase the segregation coefficients of Ce3+in LSO crystals. Transmission, UV and X-ray excited emission spectra, and UV light emission decay curves of RE-doped LSO crystals were tested at room temperature. No significant difference in emission spectra and decay time can be identified among these RE-doped LSO crystals. Doping with La3+may improve the energy resolution and photoelectron yield of LSO crystals.
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Qin et al. (2008) studied this question.
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