Quick flashing glass and its preparation process

Abstract

The invention discloses a fast scintillation glass and a preparation method thereof which can be applied in the fields of high energy physics, nuclear physics, nuclear medicine, geophysics, industrial detection and the like. The invention is a kind of scintillation glass material with silicate glass or germanate glass and other heavy metal oxides as the main components, introducing high-concentration zinc oxide (ZnO) as the luminescence center, and its preparation method includes (a) glass batch material Preparation, (b) melting of batch materials, (c) heat treatment and other three steps. The obtained glass is subjected to surface grinding and polishing treatment for fluorescence performance test. The results show that this series of glasses has the characteristics of simple melting process, strong glass forming ability, easy density adjustment, and high concentration of luminescent center ions, which is different from the existing cerium (Ce 3+ ) compared with fast scintillation glass, it has the characteristics of good ultraviolet transmission performance, fast attenuation, and high fluorescence intensity.

Description

technical field [0001] The invention relates to a scintillator material and a preparation method thereof, in particular to a fast scintillation glass with ZnO as a luminescence center and a preparation method thereof. Background technique [0002] With the expansion of the field of human activities and the improvement of the level of science and technology, new requirements are put forward for the performance of scintillation materials, especially scintillators with high resolution and high radiation resistance. For such applications, some traditional scintillation materials (such as NaI:Tl, CsI:T1, BGO) etc. cannot meet the requirements for their use. Since the 1990s, there have been many reports at home and abroad on the development and creation of new fast scintillation materials used in high-energy physics and other fields. In addition to scintillation crystals, the research and development of scintillation glass is also attracting attention, mainly because the preparat...

AI Technical Summary

Problems solved by technology

However, Ce 3+ Ion doping has the following limitations: due to Ce 3+ The concentration quenching effect of ions is obvious, so that the amount of introduction is limited, thereby affecting its luminous intensity; due to Ce 3+ The ions are sensitive to the light alkalinity of the matrix glass, which tends to red-shift the UV and visible absorption cut-off wavelengths of the glass, thus affecting the UV and visible transmittance of the glass; due to Ce 3+ Ions tend to lose an electron and become tetravalent ions (Ce 4+ ), the latter will produce absorption in the visible region, so the melting process 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 streaks are difficult to solve, thus affecting the optical uniformity of the glass

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