Rare earth halide scintillating material

A technology of scintillation materials and halides, which is applied in the direction of scintillation components, luminescent materials, chemical instruments and methods, etc., can solve problems such as crystal growth defects, affecting the uniformity of crystal performance, inconsistent doping concentration, etc., and achieve the effect of improving the yield

Active Publication Date: 2020-03-31
GRIREM ADVANCED MATERIALS CO LTD +2
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  • 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 gro...

Method used

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  • Rare earth halide scintillating material
  • Rare earth halide scintillating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: Accurately weigh 119.89g anhydrous LaBr in the Ar glove box 3 (99.99%) and 6.46g anhydrous CeBr 3.1 (99.99%), after mixing evenly, pack into a quartz crucible with a diameter of 25mm. All the other operations are the same as in Comparative Example 1.

[0045] Embodiment 2-10 is all the same as embodiment 1 except that the ratio of raw materials is different.

[0046] The detailed comparative situation of all embodiments is shown in Table 1.

[0047] Table 1

[0048]

[0049]

[0050] In summary, the present invention provides a kind of rare earth halide scintillation material, the chemical general formula of this rare earth halide scintillation material is RE 1-m Ce m x 3+n , wherein RE is one of rare earth elements La, Gd, Lu, Y, X is one or two of Cl, Br, I, 0.001≤m≤1, 0.0001≤n≤0.1. The rare earth halide scintillation material obtained in the present invention has excellent scintillation performance, and its overall performance is obviously ...

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Abstract

The invention relates to a rare earth halide scintillating material of which the chemical general formula is RE<1-m>CemX<3+n>, wherein RE is one of rare earth elements such as La, Gd, Lu and Y, and the X is one or two of Cl, Br and I, 0.001 <= m <=1 and 0.0001 <= n <= 0.1. The rare earth halide scintillating material has excellent scintillating performance of high optic output, high energy resolution ratio and rapid attenuation.

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 for the detection of 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 well 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 application fields, it is desirable that scintillation materials 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 tomog...

Claims

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Application Information

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IPC IPC(8): C09K11/85G01T1/00
CPCC09K11/7772C09K11/7719G01T1/003
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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