Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for efficiently preparing lanthanum-cerium bromide scintillation crystal array

A scintillation crystal array and crystal array technology, applied in the field of lanthanum cerium bromide scintillation crystal array, can solve the problems of large-length cutting size offset, offset, etc., achieve the effects of improving production efficiency, excellent performance, and reducing the difficulty of preparation

Pending Publication Date: 2021-05-18
北京跃成光子科技有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of pasting the crystal strip and the reflective film, it is easy to produce extrusion friction and sliding between the crystals, resulting in offset
And in the process of forming an array of crystals and cutting, there is a problem that the cutting size of the long length will be offset

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A lanthanum cerium bromide scintillation crystal array, the preparation method of which comprises the following steps:

[0032] (1) get lanthanum cerium bromide crystal, the structural formula of said lanthanum cerium bromide crystal is (Ce x R y La 1-x-y )Br 3 , where 0.01≤x≤0.99, 0.01≤y≤0.2, 0.02≤x+y≤1, R is one or more of Ga, In, Tl, Sc, cut into 100 crystal strips, the crystal strips The size is 4mm×4mm×12mm;

[0033] (2) Carry out six-sided polishing to the crystal bar that step (1) obtains, and the concrete method of described polishing is: the crystal bar that step (1) obtains is placed in nitrogen atmosphere and polishes, and the abrasive paste of 0.5 μm and Polishing strips, polished for 10 minutes on each side; then using 0.3 μm abrasive paste and polishing strips, polishing each side for 15 minutes; then using 0.1 μm abrasive paste and polishing strips, polishing each side for 20 minutes to obtain polished crystal strips, the polished crystal strips Surf...

Embodiment 2

[0038] A lanthanum cerium bromide scintillation crystal array, the preparation method of which comprises the following steps:

[0039] (1) get lanthanum cerium bromide crystal, the structural formula of said lanthanum cerium bromide crystal is (Ce x R y La 1-x-y )Br 3 , where 0.01≤x≤0.99, 0.01≤y≤0.2, 0.02≤x+y≤1, R is one or more of Ga, In, Tl, Sc, cut into 64 crystal strips, the crystal strips The size is 6mm×6mm×50mm;

[0040] (2) Carry out six-sided polishing to the crystal bar that step (1) obtains, and the concrete method of described polishing is: the crystal bar that step (1) obtains is placed in nitrogen atmosphere and polishes, and the abrasive paste of 0.5 μm and Polishing strips, polished for 10 minutes on each side; then using 0.3 μm abrasive paste and polishing strips, polishing each side for 15 minutes; then using 0.1 μm abrasive paste and polishing strips, polishing each side for 20 minutes to obtain polished crystal strips, the polished crystal strips Surfa...

Embodiment 3

[0045] A lanthanum cerium bromide scintillation crystal array, the preparation method of which comprises the following steps:

[0046] (1) get lanthanum cerium bromide crystal, the structural formula of said lanthanum cerium bromide crystal is (Ce x R y La 1-x-y )Br 3 , where 0.01≤x≤0.99, 0.01≤y≤0.2, 0.02≤x+y≤1, R is one or more of Ga, In, Tl, Sc, cut into 100 crystal strips, the crystal strips The size is 3mm×3mm×18mm;

[0047] (2) Carry out six-sided polishing to the crystal bar that step (1) obtains, and the concrete method of described polishing is: the crystal bar that step (1) obtains is placed in nitrogen atmosphere and polishes, and the abrasive paste of 0.5 μm and Polishing strips, polished for 10 minutes on each side; then using 0.3 μm abrasive paste and polishing strips, polishing each side for 15 minutes; then using 0.1 μm abrasive paste and polishing strips, polishing each side for 20 minutes to obtain polished crystal strips, the polished crystal strips Surf...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for efficiently preparing a lanthanum-cerium bromide scintillation crystal array. The method comprises the following steps of: cutting lanthanum-cerium bromide into crystal strips; polishing the crystal strips; wrapping the crystal strips with reflecting layers; arranging the crystal strips into a specific mold in an array manner; fixing the mold, introducing glue and performing vacuumizing, so as to make the glue uniformly distributed and prevent the generation of air bubbles; and finally preparing the lanthanum-cerium bromide scintillation crystal array. According to the method provided by the invention, array arrangement is firstly carried out, and then vacuumizing glue distribution is carried out, so that displacement and friction of the crystal strips and falling off of the reflecting layers caused by gluing the crystal strips one by one and then bonding the crystal strips are avoided; the preparation difficulty of the lanthanum-cerium bromide scintillation crystal array is reduced, the production period is shortened, and the production efficiency and the yield are improved. The lanthanum-cerium bromide scintillation crystal array obtained by the method for efficiently preparing the lanthanum-cerium bromide scintillation crystal array is excellent in performance and high in resolution; and the 662keV photoelectric peak energy resolution of the lanthanum-cerium bromide scintillation crystal array to a 137Cs radioactive source is lower than 12%.

Description

technical field [0001] The invention belongs to the technical field of scintillation crystal materials, and in particular relates to a method for efficiently preparing a lanthanum-cerium bromide scintillation crystal array and the obtained lanthanum-cerium bromide scintillation crystal array. Background technique [0002] Lanthanum cerium bromide scintillation crystal has the advantages of high light yield, good energy resolution, short decay time, small nonlinear response, etc., and can be widely used in international anti-terrorism, nuclear material control, safety inspection, energy, nuclear medicine, industrial Metering, petroleum logging and other fields. Lanthanum cerium bromide crystal is a brittle material with highly anisotropic mechanical and thermal properties, and there are huge differences in thermal expansion coefficients in different axial directions, so it is very easy to break during crystal growth and subsequent mechanical processing. And it is very easy t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/202
CPCG01T1/202
Inventor 郝佳
Owner 北京跃成光子科技有限公司