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Application of crystal material as scintillator

A technology of crystal materials and scintillators, applied in the field of materials, can solve the problems of small light yield and low luminous efficiency, and achieve the effects of high light yield, simple preparation method, and simple operation of the preparation process

Active Publication Date: 2020-09-29
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its luminous efficiency is low, and the light yield is an order of magnitude smaller than that of NaI.

Method used

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  • Application of crystal material as scintillator
  • Application of crystal material as scintillator
  • Application of crystal material as scintillator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Preparation of K by cooling crystallization method 2 CuCl 3 Scintillator material, its specific preparation steps are as follows:

[0044] Step 1: Put the weighed 1192.8mg of potassium chloride (KCl) and 791.99mg of cuprous chloride (CuCl) in a mortar, grind and mix well, then pour into the sample bottle, and then add 10mL of hydrochloric acid to the sample bottle A mixed solvent with water (mixed at a volume ratio of 1:1), heated and dissolved on a hot stage at 120°C, is used as a precursor solution. In the precursor solution, the concentration of potassium chloride is 1.6mol / L, and oxychloride The concentration of copper is 0.8mol / L;

[0045] Step 2: Put the precursor solution obtained above into a 70°C oil bath to keep warm;

[0046] Step 3: Slowly lower the temperature of the precursor solution obtained above at a cooling rate of 3°C / h until it reaches 25°C.

[0047] Step 4: Rinse the crystals precipitated in the above precursor solution with isopropanol, and pl...

Embodiment 2

[0049] Preparation of K by solvent evaporation 2 CuBr 3 Scintillator material, its specific preparation steps are as follows:

[0050] Step 1: Weigh 5.474g of potassium bromide (KBr) and 3.299g of cuprous bromide (CuBr) in a mortar, grind and mix well, pour into a sample bottle, and then add 10mL of hydrobromic acid to the sample bottle A mixed solvent with water (mixed at a volume ratio of 1:1), heated and dissolved on a hot stage at 120°C, is used as a precursor solution. In the precursor solution, the concentration of potassium bromide is 4.6mol / L, and phosphonium bromide The concentration of copper is 2.3mol / L;

[0051] Step 2: Evaporate and concentrate the precursor solution obtained above at 100°C to saturation;

[0052] Step 3: Slowly lower the temperature of the precursor solution obtained above at a cooling rate of 3°C / h until it reaches 25°C.

[0053] Step 4: Rinse the crystals precipitated in the above precursor solution with isopropanol, and place them in a dry...

Embodiment 3

[0055] Preparation of K by cooling crystallization method 2 CuCl 3 Scintillator material, its specific preparation steps are as follows:

[0056] Step 1: Put the weighed potassium chloride (KCl) and cuprous chloride (CuCl) in a mortar, grind and mix well, then pour into the sample bottle, then add hydrochloric acid and water (by volume Mixed solvent with a ratio of 1:2), heated and dissolved on a hot stage at 100°C, and used it as a precursor solution. In the precursor solution, the concentration of potassium chloride was 1.0 mol / L, and the concentration of cuprous chloride was 1.0 mol / L;

[0057] Step 2: Put the precursor solution obtained above into an oil bath at 130°C to keep warm;

[0058] Step 3: Slowly lower the temperature of the precursor solution obtained above at a cooling rate of 1°C / h until 20°C.

[0059] Step 4: Rinse the crystals precipitated in the above precursor solution with n-hexane, and place them in a drying tower to dry them up, and finally obtain a ...

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Abstract

The invention discloses an application of a crystal material as a scintillator. The crystal material satisfies a chemical general formula A2BX3, wherein A is a monovalent alkali metal cation, B is a monovalent transition metal cation, and X represents a monovalent halogen anion. The crystal material provided by the invention has the characteristics of no toxicity, stability, simple preparation method and high light yield, has huge potential in the field of high-energy particle detection as a novel scintillator, and shows the application prospect of large-scale industrial production.

Description

technical field [0001] The application relates to the application of a crystal material as a scintillator, which belongs to the field of materials. Background technique [0002] A scintillator is a material that releases pulses of photons after absorbing the energy of high-energy particles such as X-rays, gamma rays, and other radioactive particles. Scintillators can be divided into two categories according to their chemical properties: inorganic crystal scintillators and organic scintillators. Compared with organic scintillators, inorganic crystal scintillators have the advantages of high density, large atomic number, excellent physical and chemical properties and scintillation performance, and occupy an important position in the current practical scintillator materials. , nuclear physics, industrial survey and neutron detection and other fields have a wide range of applications. [0003] The mainstream inorganic scintillator materials currently on the market include CsI:...

Claims

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Application Information

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IPC IPC(8): G01T1/202C30B29/12C30B7/08C30B7/04
CPCG01T1/2023C30B29/12C30B7/04C30B7/08
Inventor 牛广达唐江高婉如尹力骁杨波朱劲松
Owner HUAZHONG UNIV OF SCI & TECH
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