Scintillating glass and preparation method thereof

Abstract

The invention provides a scintillating glass and a preparation method thereof and relates to a scintillating glass adopting SnO2 as the luminescence center and a preparation method thereof. The scintillating crystal has been widely researched, but has high preparation cost and large difficulty of preparation technology. In this case, the research of the scintillating glass obtains attention, because the preparation cost of glass is much lower than that of crystal and the preparation technique is simpler. Currently, the scintillating glass adopting doped Ce as the luminescence center is more researched. But as the quenching effect of the concentration of the Ce is large, the luminous intensity is limited, and simultaneously the Ce is sensitive to matrix and can cause red shift of absorption edges, thus having influence to ultraviolet-visible permeability. While the scintillating glass adopting SnO2 as the luminescence center can make up the above defects. The SnO2 belongs to a network intermediate, can be introduced with high concentration and has higher luminous intensity; simultaneously the ultraviolet-visible permeability of the glass is good; and the introduction of tin oxide can maintain, even further improve forming ability and other physical-chemical performances of the original glass.

Description

technical field [0001] The present invention relates to scintillator material and its preparation, especially to SnO 2 Scintillation glass as luminescence center and preparation method thereof. Background technique [0002] In recent years, with the continuous advancement of science and technology, the further expansion of the field of human activities, and the rapid development of high-energy physics, nuclear physics, and industrial detection, new requirements have been placed on the performance of scintillation materials, especially scintillation materials with high Excellent resolution and high radiation resistance. For now, most of the traditional scintillation materials (such as NaI:Tl, CsI:Tl, BGO, etc.) cannot well meet the existing needs. Since the 1990s, there have been many reports at home and abroad on the development and preparation of new fast scintillation materials used in high-energy physics and other fields. In addition to scintillation crystals, the rese...

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Problems solved by technology

However, Ce 3+ Doped scintillation glass has the following limitations: the concentration quenching effect is more significant, so that the amount of introduction is greatly limited, thereby affecting its luminous intensity; some rare earth ions are sensitive to the light alkalinity of the matrix glass, which easily makes the glass And the visible absorption cut-off wavelength produces a red shift, which affects the ultraviolet and visible transparency of the glass; the melting process of some rare earth ion-doped glass must use a reducing atmosphere, and platinum crucibles cannot be used, only quartz crucibles or ceramic crucibles can be used. Problems such as bubbles and air bubbles are difficult to solve, thus affecting the optical uniformity of the glass

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