The glass-forming regions of tellurium-gadolinium-tungsten ternary system prepared at 1000℃for 60 min were firstly determined.To improve density,the full replacement of lutetium for gadolinium to form Tb^(3+)-activat...The glass-forming regions of tellurium-gadolinium-tungsten ternary system prepared at 1000℃for 60 min were firstly determined.To improve density,the full replacement of lutetium for gadolinium to form Tb^(3+)-activated tellurium-lutetium-tungsten glasses with the composition of 64 TeO_(2)-20 WO_(3)-(16-y)Lu_(2)O_(3)-yTb_(2)O_(3)were designed for scintillation application.The concentration-dependent optical properties of Tb^(3+)-activated tellurium-lutetium-tungsten glasses were fully investigated by transmittance,excitation and emission spectra,together with the luminescence decay curves.The energy transfer mechanism was discussed according to Huang’s rule.The optimized 4 mol%Tb_(2)O_(3)activated tellurium-lutetium-tungsten glasses with the density of 6.49 g/cm^(3)and the lifetime of 0.551 ms are developing to be suitable for the potential detection of slow events in the future work.展开更多
基金the National Natural Science Foundation of China(11765009)the Major Discipline Academic and Technical Leaders Training Program of Jiangxi Province(20172BCB22023)+1 种基金the Science&Technology Project of Shaoguan City in Guangdong Province(2018CS11905)the Innovation and Entrepreneurship Training Program of College Students(202010419025)。
文摘The glass-forming regions of tellurium-gadolinium-tungsten ternary system prepared at 1000℃for 60 min were firstly determined.To improve density,the full replacement of lutetium for gadolinium to form Tb^(3+)-activated tellurium-lutetium-tungsten glasses with the composition of 64 TeO_(2)-20 WO_(3)-(16-y)Lu_(2)O_(3)-yTb_(2)O_(3)were designed for scintillation application.The concentration-dependent optical properties of Tb^(3+)-activated tellurium-lutetium-tungsten glasses were fully investigated by transmittance,excitation and emission spectra,together with the luminescence decay curves.The energy transfer mechanism was discussed according to Huang’s rule.The optimized 4 mol%Tb_(2)O_(3)activated tellurium-lutetium-tungsten glasses with the density of 6.49 g/cm^(3)and the lifetime of 0.551 ms are developing to be suitable for the potential detection of slow events in the future work.
