Rare earth phosphate scintillating glass and preparation method of same

Abstract

The invention discloses rare earth phosphate scintillating glass and a preparation method of the same, and relates to the field of inorganic rare earth luminous material. Trivalence cerium ions (Ce 3+) are added into a M2O-RE2O3-P2O5 phosphate glass system, and a transparent rare earth scintillating glass is produced. In the phosphate system, M is an alkali metal element and RE is a rare earth element. The transparent rare earth scintillating glass is produced through processes of mixing raw materials, pre-sintering, melting, moulding and annealing. The prepared transparent rare earth phosphate scintillating glass has strong light output in the range of 310 to 430 nanometers under the radiation of X-rays. The fluorescence attenuation lifetime is around 30 nanoseconds, and has a rapid fluorescence attenuation characteristic. The preparation method of rare earth phosphate glittering glass has the advantages of simple preparation technology, low production cost, strong light output, rapid fluorescence attenuation, and wide application prospect in high-energy ray detection field.

Description

technical field [0001] The invention relates to the field of inorganic rare earth luminescent materials, in particular to rare earth phosphate scintillation glass and a preparation method thereof. Background technique [0002] Scintillation material is a functional material that can convert the obtained energy into fluorescent emission after absorbing high-energy particles or high-energy radiation. In recent years, scintillation materials have been widely used in the fields of high energy physics, nuclear physics, industrial non-destructive testing, nuclear medicine imaging, security inspection and environmental monitoring. [0003] The scintillation material needs to have the following characteristics: 1) It has a high light yield under the irradiation of high-energy rays, so as to efficiently convert the energy of the high-energy rays into fluorescence emission. 2) Short fluorescence lifetime. Fluorescence lifetime is a parameter used to characterize the rate of fluo...

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Problems solved by technology

2) Short fluorescence lifetime

Fluoride glass has the advantages of high density and good ultraviolet light transmission performance, but the radiation resistance of fluoride glass is poor, and it has luminescence quenching, so the light output is low, and its application is greatly limited.

The research of heavy metal oxide glasses is mainly focused on using PbO as the glass matrix to increase the density of the glass to improve the radiation resistance of the glass, but the light yield of these glasses is still not satisfactory

Moreover, PbO is volatile and toxic, and strict protection measures are required in the glass production process, which increases the manufacturing cost of glass

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