摘要
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.
A kind of new scintillating glass based on PbO-Bi_2O_3 heavy-metal oxides wasprepared by doping a certain amount of SiO_2, B_2O_3 and a little Ce~(3+) ions as fluorescenceagent using conventional melt quenching technology. The fluorescence properties of the glass wereinvestigated by means of ultraviolet-visible (UV-VIS) absorption spectrum, excitation spectrum,emission spectrum, multi-channel time spectrum and transmission spectrum. The results show that thedensity of the glass reaches 7.89 g/cm~3, and its fluorescence emission wavelength is 547 nm,fluorescence fade time 18.68 ns. Compared to CeF_3, YAP, GSO, ThF_4 and PbF_4 etc. scintilla-tingcrystals, the glass lass a higher density, a faster scintillation decay constant, a longer emissionwavelength and cut off wavelength. But its ability of radiation-resistance must be improved in orderto meet the requirements of application in high energy physics experiments under 10~6 rad radiationin Co~(60) source.
基金
国家自然科学基金
