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Rare earth halide scintillating material

A technology of scintillation materials and halides, which is applied in luminescent materials, analytical materials, material analysis using wave/particle radiation, etc., can solve problems such as crystal growth defects, affecting crystal performance uniformity, inconsistent doping concentration, etc., to achieve finished products rate-enhancing effect

Active Publication Date: 2020-04-10
GRIREM ADVANCED MATERIALS CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, alkaline earth metal ions are heterogeneous impurities after all, and there are differences in radius and valence between rare earth ions. This kind of doping is easy to cause crystal growth defects, and will cause the doping concentration of alkaline earth metal ions in different parts of the crystal due to segregation. Inconsistency, which affects the uniformity of crystal properties

Method used

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  • Rare earth halide scintillating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: Accurately weigh 120g anhydrous CeBr in the Ar glove box 3.05 (99.99%) into a quartz crucible with a diameter of 25 mm. The rest of the operations are the same as in Comparative Example 1.

[0037] Embodiment 2-7 except that raw material proportioning is different, all the other operations are the same as embodiment 1.

[0038] The detailed comparative situation of all embodiments is shown in Table 1.

[0039] Table 1

[0040]

[0041] In summary, the present invention provides a rare earth halide scintillation material whose general chemical formula is CeBr 3+x , where 0.0001≤x≤0.1. The rare earth halide scintillation material obtained in the present invention has excellent scintillation performance, the overall performance is obviously better than that of conventional undoped cerium bromide crystals, and the crystal uniformity is obviously better than that of alkaline earth metal ion doped cerium bromide crystals. At the same time, the yield of c...

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Abstract

The invention relates to a rare earth halide scintillating material, which has a chemical general formula of CeBr3+x, wherein x is greater than or equal to 0.0001 and less than or equal to 0.1. The rare earth halide scintillating material provided by the invention has excellent scintillating properties such as high light output, high energy resolution, quick attenuation and the like.

Description

technical field [0001] The invention relates to the field of inorganic scintillating materials, in particular to a rare earth halide scintillating material. Background technique [0002] Scintillation materials can be used to detect high-energy rays such as α-rays, γ-rays, and X-rays, and high-energy particles such as neutrons, and are widely used in nuclear medicine, high-energy physics, safety inspection, oil logging and other fields. [0003] Scintillation materials are usually applied in the form of single crystals, and in some cases can also be ceramics or other forms. [0004] Different application fields have different performance requirements for scintillation materials. However, for most applications, scintillation materials are expected to have as high a light yield as possible, as short a decay time as possible, and as high an energy resolution as possible. Especially for nuclear medicine imaging devices such as positron emission tomography (PET) scanners, these...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/85G01N23/00G01T1/20G01T1/29G01T1/36E21B47/00
CPCC09K11/7719G01T1/20G01T1/2985G01T1/362G01N23/00E21B47/00C30B11/00G01T1/2023G21K4/00C30B29/12C30B33/02
Inventor 余金秋罗亮刁成鹏崔磊吴浩何华强
Owner GRIREM ADVANCED MATERIALS CO LTD
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