Czochralski growth and scintillation properties of Li_6Lu_xY_(1-x)(BO_3)_3:Ce~(3+) single crystals

摘要

We report on Czochralski growth of Ce~3+-doped mixed crystals of Li_6Lu(BO_3)_3 (LLBO) and Li_6Y(BO_3)_3 (LYBO) i.e. Li_6Lu_xY_(1-x)(BO_3)_3 (x=0.0, 0.5,1.0) (LLYBO). Problems faced during the growth process and the techniques to overcome them are discussed. Single phase of the grown crystals is confirmed by powder X-ray diffraction (XRD) analysis. The grown crystals are characterized for their scintillation properties such as energy resolution, light yield, fluorescent decay time and α/β ratio under γ-rays and α-particles excitation. The X-ray induced luminescence is measured for the grown crystals.