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Compound bismuth cadmium phosphate, bismuth cadmium phosphate scintillation crystal and preparation method and application of bismuth cadmium phosphate scintillation crystal

A technology of bismuth cadmium phosphate and scintillation crystals, which is applied in the field of crystals and can solve the problems of low crystal light output and limited applications

Active Publication Date: 2021-12-28
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PbWO 4 The disadvantage of low light yield of crystals limits its application outside the field of high energy physics
Therefore, it is necessary to explore new scintillators with relatively high luminous efficiency, high energy resolution, strong resistance to radiation damage, high material density, no deliquescence, high mechanical hardness, easy cutting, polishing and storage, and low price. Crystals remain a challenge

Method used

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  • Compound bismuth cadmium phosphate, bismuth cadmium phosphate scintillation crystal and preparation method and application of bismuth cadmium phosphate scintillation crystal
  • Compound bismuth cadmium phosphate, bismuth cadmium phosphate scintillation crystal and preparation method and application of bismuth cadmium phosphate scintillation crystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Press Reaction: (35-x) / 2bi 2 O 3 + XCDO + 10NH 4 Hide 2 PO 4 → BI 35-x CD x P 10 O (155-x) / 2 + 10NH 3 ↑ + 15h 2 O ↑ synthesis BI 35-x CD x P 10 O (155-x) / 2 , X = 0-35 compounds.

[0041] Bring BI 2 O 3 , CDO, NH 4 Hide 2 PO 4 Majestic (35-x) / 2: x: 10, x = 0-35, weigh in the mortar, mix and carefully grind, then load φ100mm × 100mm open mouth, jade 坩 坩, put it into Maver In the furnace, the temperature is slowly warmed to 500 ° C, the temperature is 24 hours, cooled to room temperature, remove it into the muffle after the second grinding, then warmed to 750 ° C, constant temperature 24 hours, cool to room temperature, take out the third time After grinding, put it in a muffle furnace, and then at 750 ° C for 48 hours, the ground-resistant cadmium compound monocrystalline powder was taken out, and X-ray analysis was performed on the product, and the resulting X-ray spectrum and cadmium phosphate cadmium biocadium Bi 35-x CD x P 10 O (155-x) / 2 (x = 0-35) The X-ray spec...

Embodiment 2

[0046] (1) Press Reaction: (35-x / 2) (BIO) 2 CO 3 + XCDO + 10NH 4 Hide 2 PO 4 → BI 35-x CD x P 10 O (155-x) / 2 + 10NH 3 ↑ + 15h 2 O ↑ + (35-x) / 2CO 2 ↑ Synthesis BI 35-x CD x P 10 O (155-x) / 2 , X = 0-35 compounds.

[0047] (BIO) 2 CO 3 , CDO, NH 4 Hide 2 PO 4 Majestic (35-x) / 2: x: 10, x = 0-35, weigh in the mortar, mix and carefully grind, then load φ100mm × 100mm open mouth, jade 坩 坩, put it into Maver In the furnace, the temperature is slowly warmed to 600 ° C, the constant temperature is 24 hours, cooled to room temperature, take out the second grinding, then placed into the muffle furnace, then heating to 750 ° C, constant temperature 24 hours, cool to room temperature, take out the third time After grinding, put it in a muffle furnace, and then at 750 ° C for 48 hours, the ground-resistant cadmium compound monocrystalline powder was taken out, and X-ray analysis was performed on the product, and the resulting X-ray spectrum and cadmium phosphate cadmium biocadium Bi 35-x C...

Embodiment 3

[0054] (1) Press Reaction: (35-x) Bi (OH) 3 + XCDO + 10NH 4 Hide 2 PO 4 → BI 35-x CD x P 10 O (155-x) / 2 + 10NH 3 ↑ + ((105-3x) / 2 + 15) h 2 O ↑ synthesis BI 35-x CD x P 10 O (155-x) / 2 , X = 0-35 compounds.

[0055] Bi (OH) 3 , CDO, NH 4 Hide 2 PO 4Mass moon (35-x): x: 10, x = 0-35, weigh into a mortar, mix and carefully ground, then load φ100mm × 100mm open mouth, penta jade 坩, put into the muffle furnace Slowly temperature rise to 600 ° C, constant temperature 14 hours, cool to room temperature, remove it into the muffle in the muffle, then warmed to 750 ° C, constant temperature 34 hours, cool to room temperature, remove after the third ground In the muffle furnace, then at 750 ° C for 48 hours, it was taken out to obtain a monocrystalline powder having a cadmium phosphate of the broccoli, X-ray analysis of the product was taken, and the resulting X-ray spectrum and cadmium phosphate cadmium Bi were taken. 35-x CD x P 10 O (155-x) / 2 The X-ray spectrum obtained by the X = 0-35 s...

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Abstract

The invention relates to a compound bismuth cadmium phosphate, a bismuth cadmium phosphate scintillation crystal and a preparation method and application thereof. The chemical formulas of the compound and the crystal are Bi(35-x)CdxP10O(155-x) / 2, wherein the x is equal to 0-35, the crystal belongs to a monoclinic system, the space group is C2, the cell parameter Z is equal to 2, the molecular weight is 5204.09-8864 g / mol, and the crystal density is 4.476-8.529 g / cm3. According to the scheme, a compound bismuth cadmium phosphate is synthesized by adopting a solid-phase reaction method, and the bismuth cadmium phosphate scintillation crystal is grown by adopting a high-temperature molten salt method or a pulling method, a top seed crystal method, a Bridgman-Stockbarger method, a hydrothermal method, a temperature gradient method, a floating zone method or an edge-defined film-fed growth method. The bismuth cadmium phosphate crystal can be used as a scintillation crystal.

Description

Technical field [0001] The present invention relates to the chemical formula of cadmium cadmium phosphate and cadmium phosphate cadmium scintillation crystals. 35- x CD x P 10 O (155-x) / 2 Where x = 0-35. The present invention relates to the field of crystals, and more particularly to compound phospketium phospketium phospketium and cadmium scintillation crystals and preparation methods thereof. Background technique [0002] The scintillation material is a material that absorbs high energy particles or rays, wherein the ultra-fast scintillation material refers to a response time less than 4 ns (10 -9 S) a scintillator material. Such materials play a pillar effect in pulse radiation detection, microme detection, reaction kinetics, inertial constraints in the sun. Although different applications have different requirements for scintillation crystals, scintillation crystals are used to detect ionizing radiation in most applications, so that the scintillation crystal has high blockin...

Claims

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Application Information

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IPC IPC(8): C30B29/14C30B9/08C30B7/10C30B11/02C30B11/14C30B15/34C01B25/45C30B13/00C30B33/02
CPCC30B29/14C30B9/08C30B7/10C30B11/02C30B11/14C30B15/34C01B25/45C30B13/00C30B33/02C01P2002/72
Inventor 俞洪伟王健康吴红萍胡章贵
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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