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Europium-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 europium ion-doped gadolinium lutetium oxyfluoride scintillation glass and its preparation, which can solve the problems of reduced luminous intensity, low density of scintillation glass, and low content of heavy metals, and achieve melting and annealing The effect of low temperature, convenient industrial production, and simple preparation method

Inactive Publication Date: 2015-01-21
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The content of heavy metals is low, the density of scintillation glass is low, the volume is large, and it is easy to deliquescence, and the volume of equipment and instruments is correspondingly increased when used, and the cost is high; Gd 3+ When the ion content is high, although the density increases, the scintillation performance is poor due to the decrease of luminous intensity. Therefore, it is particularly important to find and study metal oxide scintillation glasses with higher density and stronger luminous intensity.

Method used

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  • Europium-ion-doped gadolinium lutetium oxyfluoride scintillation glass and preparation method thereof
  • Europium-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 : 35mol%, B 2 o 3 : 13mol%, BaF 2 : 15mol%, Lu 2 o 3 : 25mol%, Gd 2 o 3 : 10mol%, Eu 2 o 3 : 2mol%, weigh each raw material, mix all the raw materials evenly; then pour into a crucible to melt into a melt, the melting temperature is 1350-1450°C, keep warm for 0.5-2 hours after melting; pour the melt into a preheated 200 On a cast iron mold at ~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 45-55°C at a rate of 8-10°C / hour ℃, and then turn off the power supply of the muffle furnace to automatically cool down to room temperature to obtain europium ion-doped gadolinium lutetium oxyfluoride scintillation glass, the scintillation glass density is 6.0g / 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 gla...

Embodiment 2

[0020] Substantially the same as Example 1, the only difference is the raw material composition: SiO 2 : 22mol%, B 2 o 3 : 20mol%, BaF 2 : 15mol%, Lu 2 o 3 : 30mol%, Gd 2 o 3 : 10mol%, Eu 2 o 3 : 3mol%, the density of scintillation glass is 6.2g / cm 3 ; The integral luminous intensity is about 682.

Embodiment 3

[0022] Substantially the same as Example 1, the only difference is the raw material composition: SiO 2 : 20mol%, B 2 o 3 : 15mol%, BaF 2 : 15mol%, Lu 2 o 3 : 35mol%, Gd 2 o 3 : 10mol%, Eu 2 o 3 : 5mol%, the density of scintillation glass is 6.4g / cm 3 ; The integrated luminous intensity is about 773.

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Abstract

The invention discloses europium-ion-doped gadolinium lutetium oxyfluoride scintillation glass and a preparation method thereof. The europium-ion-doped gadolinium lutetium oxyfluoride scintillation glass is prepared by mixing raw material components, melting, casting a mould and annealing; and the europium-ion-doped gadolinium lutetium oxyfluoride scintillation glass disclosed by the invention is prepared from the following raw material components in percentage by mole: 20-35mol% of SiO2, 13-20mol% of B2O3, 15mol% of BaF2, 25-35mol% of Lu2O3, 10mol% of Gd2O3 and 2-5mol% of Eu2O3. The europium-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. 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 oxyfluoride scintillation glass doped with europium ions and a preparation method. 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, γ-rays, or 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 ~ 80mol%, while Gd 3+ The content is very small, it is used as a sensitizer, and the content of BaF2 is small, it is used as a flux. The authorized announcement number is CN1269758 invention patent discloses heavy metal oxide scintillation glass, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C4/12C03C3/068
Inventor 张约品王倩杨斌徐波夏海平王金浩
Owner NINGBO UNIV
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