Cerium-ion-doped gadolinium lutetium oxyfluoride scintillation glass and preparation method thereof

A technology of oxyfluoride and scintillation glass, which is applied in the field of cerium ion-doped gadolinium lutetium oxyfluoride scintillation glass and its preparation, which can solve the problems of easy deliquescence, low density of scintillation glass, and low luminous intensity, and reach the melting and annealing temperature low cost, convenient for industrialized production, and simple preparation method

Inactive Publication Date: 2015-03-04
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Scintillation glass has low density, large volume, and is easy to deliquesce. When used, the volume of equipment and instruments will also increase accordingly, the cost will be high, the luminous intensity will be low, and the scintillation performance will be poor. Flashing glass is particularly important

Method used

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  • Cerium-ion-doped gadolinium lutetium oxyfluoride scintillation glass and preparation method thereof
  • Cerium-ion-doped gadolinium lutetium oxyfluoride scintillation glass and preparation method thereof

Examples

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Effect test

Embodiment 1

[0018] According to raw material composition: SiO 2 : 34 mol%, B 2 o 3 : 15mol%, BaF 2 : 15 mol%, Lu 2 o 3 : 20 mol%, Gd 2 o 3 : 15 mol%, Ce 2 o 3 : 1 mol%, weigh each raw material, mix all raw materials evenly; then pour into a crucible to melt into a melt, the melting temperature is 1350-1450°C, keep it warm for 0.5-2 hours after melting; pour the melt into a preheated On a cast iron mold at 200-300°C, cool naturally to form glass; place the glass in a muffle furnace for annealing, annealing conditions: keep warm at 400-500°C for 1 hour, then cool down to 45-45°C at a rate of 8-10°C / hour 55°C, then turn off the power supply of the muffle furnace and automatically cool down to room temperature to obtain cerium ion-doped gadolinium lutetium oxyfluoride scintillation glass with a density of 6.1g / cm 3 ; The scintillation glass is cut, surface ground, and polished to be processed into a 50 × 50 × 10mm scintillation glass sample, and the scintillation glass sample is exci...

Embodiment 2

[0020] Substantially the same as Example 1, the only difference is the raw material composition: SiO 2 : 29 mol%, B 2 o 3 : 15mol%, BaF 2 : 15 mol%, Lu 2 o 3 : 25 mol%, Gd 2 o 3 : 15 mol%, Ce 2 o 3: 1 mol%, the density of scintillation glass is 6.2g / cm 3 ; The integral luminous intensity is about 8834.

Embodiment 3

[0022] Substantially the same as Example 1, the only difference is the raw material composition: SiO 2 : 23 mol%, B 2 o 3 : 15mol%, BaF 2 : 15 mol%, Lu 2 o 3 : 30 mol%, Gd 2 o 3 : 15 mol%, Ce 2 o 3 : 2 mol%, the density of scintillation glass is 6.4g / cm 3 ; The integral luminous intensity is about 8924.

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Abstract

The invention discloses cerium-ion-doped gadolinium lutetium oxyfluoride scintillation glass and a preparation method thereof. The cerium-ion-doped gadolinium lutetium oxyfluoride scintillation glass is prepared by mixing raw material components, melting, casting a mould and annealing; and the cerium-ion-doped gadolinium lutetium oxyfluoride scintillation glass disclosed by the invention is prepared from the following raw material components in percentage by mole: 23-34mol% of SiO2, 15mol% of B2O3, 15mol% of BaF2, 20-30mol% of Lu2O3, 15mol% of Gd2O3 and 1-2mol% of Ce2O3. The cerium-ion-doped gadolinium lutetium oxyfluoride scintillation glass disclosed by the invention has the advantages of higher density and higher luminous intensity as Lu2O3 and Gd2O3 components coexist, self absorption of optical scintillation glass can be avoided, the density of Lu2O3 is higher than that of Gd2O3, the heavy metal content is more than or equal to 35mol%, the density is more than 6.0g / cm<3> or above and the luminous integral intensity is higher and is more than 7900. A preparation method is simple, the production cost is lower, and industrial production is easy to realize.

Description

technical field [0001] The invention relates to scintillation glass, in particular to gadolinium-lutetium oxide fluoride scintillation glass doped with cerium ions and a preparation method thereof. Background technique [0002] Scintillation material is a photofunctional material that can emit visible light under the excitation of high-energy particles or rays (such as x-rays, gamma rays, or atomic nuclear particles, etc.). Scintillation glass can be divided into silicate glass, heavy metal oxide glass, phosphate glass, etc. based on the base material. Such as authorized announcement number is CN100522855 invention patent just discloses a kind of silicate scintillation glass, in the raw material of this scintillation glass SiO 2 Accounted for 50 ~ 80 mol %, and Gd 3+ The content is very small, used as a sensitizer, BaF 2 The content is small, and it is used as a flux. The authorized announcement number is CN1269758 invention patent discloses heavy metal oxide scintillat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C4/00C03C3/068
Inventor 张约品杨斌徐波王倩夏海平王金浩
Owner NINGBO UNIV
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