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Cerium activated rare earth halide bromide scintillator and preparing method thereof

A scintillator and bromination technology, which is applied in chemical instruments and methods, luminescent materials, etc., can solve the problems such as the influence of the coulomb interaction of surrounding ions, and achieve the effects of low manufacturing cost, high light output, and good energy resolution

Active Publication Date: 2007-10-17
北京玻璃研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, due to Ce 3+ The electrons on the 5d orbital are in a bare state and are susceptible to the Coulomb interaction of surrounding ions

Method used

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  • Cerium activated rare earth halide bromide scintillator and preparing method thereof
  • Cerium activated rare earth halide bromide scintillator and preparing method thereof
  • Cerium activated rare earth halide bromide scintillator and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0072] 99.7% LaBr 3 0.3% CeCl 3 (Example 1), 99.4% LaBr 3 0.6% CeCl 3 (Example 2), 99.1% LaBr 3 0.9% CeCl 3 (Example 3) Growth of single crystal

[0073] LaBr 3 (99.99%)

[0074] Process steps: the same as Comparative Example 1.

Embodiment 4

[0076] 96%LaBr 3 4% CeCl 3 single crystal growth

[0077] Raw materials used: LaBr 3 (99.99%) 48.00 g; CeCl 3 (99.99%) 1.30 g.

[0078] Process steps: basically the same as Comparative Example 1. The difference is that in step (3), the temperature in the high temperature zone is 850°C.

Embodiment 5

[0080] 90%LaBr 3 10% CeCl 3 single crystal growth

[0081] Raw materials used: LaBr 3 (99.99%) 45.00 g; CeCl 3 (99.99%) 3.25 g.

[0082] Process steps: basically the same as Comparative Example 1. The difference is that in step (3), the temperature in the high temperature zone is 860°C. The whole process takes about 7 to 8 days. The obtained crystal blanks were transparent and colorless, about 3-4 cm in length.

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Abstract

A cerium-activated brominated rare earth scintillant and method for preparing same belongs to the scintillating materials field. The scintillant in the invention uses brominated rare earth compound or mixture thereof as the substrate and halogen cerium compound or mixture thereof except for bromine as the activating agent. The chemical formula of the scintillant is (1-a)ReBr3.aCeX3, wherein Re is one of or mixture of two to four of lanthanum, gadolinium, lutecium and yttrium, X is one or mixture of two to three of F, Cl and I and a is the moore percentage of CeX3, 0 C09K 11 / 85 4 20 3 2007 / 6 / 1 101054522 2007 / 10 / 17 000000000 Beijing Glass Research Institute Beijing 100062 Zhang Mingrong Zhang Chunsheng Ge Yuncheng Guo Jianjun Fan Yuhong Lu Hong Ding Xiaodong Zhang Hongmei hewen ban 11138 San-gao Patent Agency Room 111, the East Building 1, No.17, the West Road of Beisanhuan, Beijing 100088

Description

technical field [0001] The invention relates to a rare earth halogen bromide scintillator activated by cerium and a manufacturing method thereof, belonging to the technical field of scintillator materials. Background technique [0002] Scintillators refer to substances that can emit light in a scintillation manner under the irradiation of high-energy particles or rays (such as γ-rays, X-rays, cosmic rays, and particles with energy greater than 1keV). Scintillators have been widely used in various high-energy radiation detection fields, specifically involving basic research fields such as high-energy physics, nuclear physics, geophysics, and space physics, as well as geological surveys, oil well logging, environmental monitoring, port security inspections, and industrial non-destructive testing. , medical imaging and other applications. [0003] The parameters for judging the performance of scintillators mainly include: light output, energy resolution and time characteristic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/85
Inventor 张明荣张春生葛云程郭建军范宇红陆红丁小东张红梅
Owner 北京玻璃研究院有限公司
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