Scintillation Properties of Tl+-doped Cs2BaBr4 Crystal
Using BaBr2,CsBr and TlBr with high-purity as the raw materials,the polycrystalline powders of Cs2BaBr4:Tl+with different doping amount used as raw materials synthesized by the solid-state reaction method.The crystals of Cs2BaBr4:Tl+with different doping amount were grown by Bridgman technique.The scintillation performance of crystals were measured,including the photo luminescence,X-ray induced luminescence,and decay time The results showed that under the excitation of the wavelength at 265nm,the crystal exhibits two emission peaks at wavelengths around 366 and 450 nm.The decay time of the Cs2BaBr4:1%Tl+、Cs2BaBr4:2%Tl+、Cs2BaBr4:4%Tl+crystals under the excitation of UV light was fitted to be 1.6、1.7 and 1.35 us.
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