Rare earth ion doped oxyhalogen silicate glass and preparation method thereof

Abstract

The invention discloses rare earth ion doped oxyhalogen silicate glass and a preparation method thereof. The glass is characterized by comprising the following ingredients by mol percentage: 10-70 percent of SiO2, 20-55 percent of PbF, 20-50 percent of PbCl, 0-20 percent of AlF3, 0-30 percent of Al2O3, 0-10 percent of ZnF2, 1-20 percent of Gd2O3 and 0.1-10 percent of rare earth compound. The preparation method comprises the following steps of: evenly mixing the ingredients according to the proportion thereof, pouring the mixture in a crucible, melting for 0.5-2h at 1,100-1,200 DEG C, then casting the melt on an iron casting die with the temperature of 200-300 DEG C to form glass, then putting the glass in a muffle furnace for 1-3h at 400-500 DEG C, cooling to 45-55 DEG C at a speed of 8-10 DEG C / h, and finally cooling to the room temperature. The invention has the advantages of high density, high light output, high light yield, excellent physical and chemical characteristics, simple preparation method and low production cost.

Description

Technical field [0001] The invention relates to a halosilicate glass, in particular to a halosilicate glass doped with rare earth ions and a preparation method thereof. Background technique [0002] Scintillation material is a kind of light functional material that can emit visible light under the excitation of high-energy particles or rays (such as x-rays, gamma rays or nuclear particles, etc.). As the working substance of various scintillation detectors, it is widely used in high-energy physics and Nuclear physics experimental research, nuclear medicine diagnosis, industrial and geological prospecting and other fields. In the experimental research of high-energy physics and nuclear physics, electromagnetic calorimeters made of a large number of scintillating materials are used to detect high-energy rays released by various high-energy particles; for nuclear medicine diagnosis, scintillation detectors made of scintillating materials are developing rapidly The main equipment of ...

AI Technical Summary

Problems solved by technology

Heavy metal halide glass has high transmittance in the ultraviolet and visible regions, but the scintillation efficiency of heavy metal halide glass is very low, and the light yield is not high; heavy metal oxide silicate glass is easy to manufacture large-scale products, and the production cost is low advantages, but heavy metal oxide silicate glass (such as containing PbO, Bi 2 o 3 The short-wavelength transmittance of other components) is poor, which affects the output of its scintillation light, while the halooxysilicate glass has the advantages of good stability, high density, and high transmittance of short-wavelength blue-violet light.

[0005] Rare earth ions can absorb or emit light of various wavelengths from ultraviolet to infrared to form a variety of luminescent materials. The luminescence of most rare earth ions comes from the electronic transition of the unfilled 4f shell, and the trivalent rare earth ion Ce 3+ 、Pr 3+ , Tb 3+ 、Eu 3+ 、Dy 3+ The 5d energy level has been observed, and both can activate ions to produce scintillation. However, the trivalent rare earth ion Ce 3+ 、Pr 3+ , Tb 3+ 、Eu 3+ 、Dy 3+ It is mainly used as infrared and up-conversion luminescent materials, and the trivalent rare earth ion Ce has not been used at home and abroad. 3+ 、Pr 3+ , Tb 3+ 、Eu 3+ 、Dy 3+ Related research reports on doping halooxysilicate glasses as scintillation materials

Images