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Ultra-high-density boron germanotelluriteb scintillation glass and preparation method thereof

A scintillation glass, ultra-high-density technology, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of reduced radiant luminescence intensity, lack of practicability, inability to ensure high light yield at the same time, and achieve a simple preparation process. , The effect of good chemical stability and easy adjustment of chemical components

Active Publication Date: 2018-10-02
JINGGANGSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] More and more research results have proved that these scintillation glasses containing heavy ion compounds such as lead, bismuth, and tungsten may have a certain intensity of fluorescence emission in low-energy photoluminescence, but they are excited by high-energy rays. Significantly reduced radioluminescence intensity, sometimes no radioluminescence
Therefore, these scintillation glasses containing heavy ion compounds such as lead, bismuth, and tungsten may better meet the density requirements of scintillation glasses, but they cannot guarantee the high light yield requirements at the same time, so they are not practical.

Method used

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  • Ultra-high-density boron germanotelluriteb scintillation glass and preparation method thereof
  • Ultra-high-density boron germanotelluriteb scintillation glass and preparation method thereof
  • Ultra-high-density boron germanotelluriteb scintillation glass and preparation method thereof

Examples

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Effect test

Embodiment 1

[0043] This example relates to Tb 3+ Preparation and testing of activated ultra-high density borogermanium tellurate scintillation glass.

[0044] Step 1: Accurately weigh each component according to the ultra-high-density borogermanium tellurate scintillation glass formula in Table 1, mix well and melt it in an air atmosphere at 1550°C for 90 minutes by high-temperature melting method;

[0045] Step 2: Pour the above-mentioned homogeneous melt into a preheated 400°C stainless steel mold for casting, and cool naturally to form glass; and

[0046] Step 3: Put the above glass in a muffle furnace at 600° C. for 3.5 hours and heat it for 3.5 hours for annealing treatment to obtain the scintillation glass according to Example 1.

[0047] Step 4: Cut the glass into 15×20×2.5mm 3 Specifications, ultra-high density borogermanium tellurate scintillation glass obtained after surface grinding and polishing.

[0048] Table 1. Composition of ultra-high-density borogermanium tellurate sc...

Embodiment 2

[0053] This example involves Ce 3+ Activate the ultra-high-density borogermanium tellurate scintillation glass, the specific glass composition of Example 2 is given in Table 1, and the luminescent center is Ce 3+ For ions, the melting temperature is 1535°C, the melting time is 90min, and the melting atmosphere is air.

[0054] figure 2 It is the photoluminescence spectrum and transmission spectrum of the scintillation glass of Example 2. from figure 2 (a) It can be seen that a broad peak located between 350-500nm corresponds to Ce 3+ The nanosecond optical transition of ions 5d-4f has the strongest emission peak near 382nm. from figure 2 (b) Ce 3+ The transmission spectrum of the activated ultra-high density borogermanium tellurate scintillation glass can be seen because its UV cut-off absorption edge is located at 400nm, which is higher than the Ce 3+ The ions are the strongest emitters, so they are almost completely self-absorbed under X-ray excitation without radi...

Embodiment 3

[0056] This embodiment relates to Dy 3+ Activate ultra-high-density borogermanium tellurate scintillation glass, the specific glass composition of Example 3 is given in Table 1, and the luminescent center is Dy 3+ For ions, the melting temperature is 1535°C, the melting time is 90min, and the melting atmosphere is air.

[0057] image 3 It is the photoluminescence spectrum and the X-ray excitation emission spectrum of the scintillating glass of embodiment 3, can observe and be positioned at 483nm and 577nm etc. strong emission peak, correspond to Dy 3+ Ionic 4 f 9 / 2 → 6 h J (J = 15 / 2 and 13 / 2) Optical transitions. And under X-ray (W target, 75kV, 15mA) excitation, obtain the scintillation light output of embodiment 3 scintillation glass, as image 3 As shown in (b), its characteristic emission peak is exactly the same as that of photoluminescence.

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Abstract

The invention relates to ultra-high-density boron germanotelluriteb scintillation glass and a preparation method thereof. The ultra-high-density boron germanotelluriteb scintillation glass is characterized in that main components of a network former of the ultra-high-density boron germanotelluriteb scintillation glass (metered by mole percent) are 5-30 mol% of B2O3, 10-30 mol% of GeO2 and 5-20 mol% of TeO2, and the rest of 20-60 mol% of glass component consists of rare earth oxide or rare earth fluoride. Rare earth ions comprise Y3+, La3+, Ce3+, Pr3+, Nd3+, Pm3+, Sm3+, Eu3+, Gd3+, Tb3+, Dy3+,Ho3+, Er3+, Tm3+, Yb3+ and Lu3+, and the sum of the components is 100 mol%. The invention further discloses a method for preparing the boron germanotelluriteb scintillation glass which is rich in Gd2O3, and application of the ultra-high-density boron germanotelluriteb scintillation glass in X-ray medical imaging, industrial online detection, national safety supervision and high-energy physics or nuclear physics experiments.

Description

technical field [0001] The invention relates to the technical field of scintillation materials. Specifically, the invention relates to rare earth ion-doped ultra-high-density borogermanium tellurate scintillation glass and a preparation method thereof. Background technique [0002] Scintillators are optical functional materials that absorb high-energy rays and emit visible light or near-ultraviolet light. They have been widely used in high-energy physics, nuclear physics, astrophysics, geophysics, industrial flaw detection, medical imaging, and safety testing. [0003] Scintillation glass is expected to replace commercial scintillation crystals due to its advantages such as easy adjustment of chemical composition, good optical uniformity, easy realization of large size, and simple preparation method. The greater advantage of scintillation glass is that it can be drawn into optical fibers and made into optical fiber panels, thereby improving the detection efficiency of high-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/253C03B19/02C03B25/00
CPCC03B19/02C03B25/00C03C3/253
Inventor 孙心瑗温卓兴刘秀健胡强林杨庆梅
Owner JINGGANGSHAN UNIVERSITY
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