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

Abstract

The invention discloses terbium-ion-doped gadolinium lutetium oxyfluoride scintillation glass and a preparation method thereof. The terbium-ion-doped gadolinium lutetium oxyfluoride scintillation glass is prepared by mixing raw material components, melting, casting a mould and annealing; and the terbium-ion-doped gadolinium lutetium oxyfluoride scintillation glass disclosed by the invention is prepared from the following raw material components in percentage by mole: 25-30mol% of SiO2, 10-15mol% of B2O3, 15mol% of BaF2, 25-30mol% of Lu2O3, 10mol% of Gd2O3 and 5mol% of Tb2O3. The terbium-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 2700. 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 terbium 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 scintillati...

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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.

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