摘要
A systematical exploration of energy transfer processes in Lu2（1-x）Y2xSiO5：Ce（LYSO） crystals under vacuum ultraviolet-ultraviolet（VUV-UV） excitation was implemented. The relationship between energy transfer and scintillation properties was established. It is revealed that there are mainly three energy transfer types in the crystal i.e. host → Ce1/Ce2/STEs, Ce1 →Ce2 and STEs → Ce1/Ce2. The influence of Y content of the LYSO crystals on the energy transfer efficiency of the above processes was carefully analyzed. Besides, we find a special component of the crystal i.e. Y content = 45 at% at which the energy resolution and light output of the crystal perform the worst.
A systematical exploration of energy transfer processes in Lu2（1-x）Y2xSiO5：Ce（LYSO） crystals under vacuum ultraviolet-ultraviolet（VUV-UV） excitation was implemented. The relationship between energy transfer and scintillation properties was established. It is revealed that there are mainly three energy transfer types in the crystal i.e. host → Ce1/Ce2/STEs, Ce1 →Ce2 and STEs → Ce1/Ce2. The influence of Y content of the LYSO crystals on the energy transfer efficiency of the above processes was carefully analyzed. Besides, we find a special component of the crystal i.e. Y content = 45 at% at which the energy resolution and light output of the crystal perform the worst.
基金
supported by National Natural Science Foundation of China(11475241)
Science and Technology Commission of Shanghai Municipality(15DZ2251200)
