A kind of new scintillating glass based on PbO-Bi2O3 heavy-metal oxides was prepared by doping a certain amount of SiO2, B2O3 and a little Ce3+ ions as fluorescence agent using conventional melt quenching technology. ...A kind of new scintillating glass based on PbO-Bi2O3 heavy-metal oxides was prepared by doping a certain amount of SiO2, B2O3 and a little Ce3+ ions as fluorescence agent using conventional melt quenching technology. The fluorescence properties of the glass were investigated by means of ultraviolet-visible (UV-VIS) absorption spectrum, excitation spectrum, emission spectrum, multi-channel time spectrum and transmission spectrum. The results show that the density of the glass reaches 7.89 g/cm3, and its fluorescence emission wavelength is 547 nm, fluorescence fade time 18.68 ns. Compared to CeF3, YAP, GSO, ThF4 and PbF4 etc. scintilla-ting crystals, the glass has a higher density, a faster scintillation decay constant, a longer emission wavelength and cut off wavelength. But its ability of radiation-resistance must be improved in order to meet the requirements of application in high energy physics experiments under 106 rad radiation in Co60 source.展开更多
文摘A kind of new scintillating glass based on PbO-Bi2O3 heavy-metal oxides was prepared by doping a certain amount of SiO2, B2O3 and a little Ce3+ ions as fluorescence agent using conventional melt quenching technology. The fluorescence properties of the glass were investigated by means of ultraviolet-visible (UV-VIS) absorption spectrum, excitation spectrum, emission spectrum, multi-channel time spectrum and transmission spectrum. The results show that the density of the glass reaches 7.89 g/cm3, and its fluorescence emission wavelength is 547 nm, fluorescence fade time 18.68 ns. Compared to CeF3, YAP, GSO, ThF4 and PbF4 etc. scintilla-ting crystals, the glass has a higher density, a faster scintillation decay constant, a longer emission wavelength and cut off wavelength. But its ability of radiation-resistance must be improved in order to meet the requirements of application in high energy physics experiments under 106 rad radiation in Co60 source.
