Preparation and properties of a new scintillating glass

Abstract

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.

Keywords

heavy-metal oxide / scintillating glass / fluorescence wavelength / decay time / radiation resistance

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