Neutron detection glass scintillator and preparation method and application thereof

A scintillator and glass technology, which is applied in the field of neutron detection glass scintillator and its preparation, can solve the problems of uncontrollable carbon powder amount, platinum crucible damage, poor product batch stability, etc., and achieve internal streaks and bubbles. Guaranteed yield and quality, good batch stability

Pending Publication Date: 2022-03-04
CHINA BUILDING MATERIALS ACAD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since Ce ions are easily oxidized to tetravalent Ce ions when they are melted under air atmosphere conditions, and thus lose their luminous ability, in order to ensure the valence state of Ce ions, a certain amount of carbon is usually added to the glass batch. pink
However, due to the extremely poor compatibility of carbon powder and glass melt, most of the carbon powder will float on the surface of the glass melt during the melting process, which leads to uncontrollable carbon powder in the glass and stable product batches Poor performance, very low yield rate, and there may be agglomerated carbon powder

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Neutron detection glass scintillator and preparation method and application thereof
  • Neutron detection glass scintillator and preparation method and application thereof
  • Neutron detection glass scintillator and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0031] The preparation method of the neutron detection glass scintillator described in the following embodiments 1-4 of the present invention comprises the following steps:

[0032] (1) According to the composition and proportion (%) of the glass scintillator shown in Table 1 respectively, after calculation, select high-purity quartz sand (>99.9%), lithium carbonate, hydrogen as shown in Table 1 with the amount (g) Aluminum oxide, cerium nitrate hexahydrate, and antimony trioxide are used as raw materials, wherein the lithium carbonate is 95% 6 Li 2 CO 3 ; After the above raw materials are fully mixed, they are dried at 120°C for 12 hours to obtain glass batch materials, which are set aside;

[0033] (2) Put the above-mentioned glass batch material into a closed graphite crucible (the structure and size are as attached Figure 1-2 ), control the graphite purity of the graphite crucible and the graphite crucible cover to be better than 5ppm, place the crucible in a high-temp...

Embodiment 5

[0039] The preparation method of the neutron detection glass scintillator described in this embodiment comprises the following steps:

[0040] (1) According to the composition and proportioning of the neutron detection glass scintillator described in Example 3, high-purity quartz sand (>99.9%), lithium carbonate, aluminum hydroxide, cerium nitrate hexahydrate, and antimony trioxide were used as Raw material, wherein, the lithium carbonate raw material selection abundance is 90% 6 Li 2 CO 3 ; After the above raw materials are fully mixed, they are dried at 120°C for 12 hours to obtain glass batch materials, which are set aside;

[0041] (2) Put the above-mentioned glass batch material into a closed graphite crucible (the structure and size are as attached Figure 1-2 ), control the graphite purity of the graphite crucible and the graphite crucible cover to be better than 20ppm, place the crucible in a high-temperature melting furnace, heat up to 1450°C for high-temperature m...

Embodiment 6

[0044] The preparation method of the neutron detection glass scintillator described in this embodiment comprises the following steps:

[0045] (1) According to the composition and proportioning of the neutron detection glass scintillator described in Example 3, high-purity quartz sand (>99.9%), lithium carbonate, aluminum hydroxide, cerium nitrate hexahydrate, and antimony trioxide were used as Raw material, wherein, described lithium carbonate raw material selects natural Li 2 CO 3 ; After the above raw materials are fully mixed, they are dried at 120°C for 12 hours to obtain glass batch materials, which are set aside;

[0046] (2) Put the above-mentioned glass batch material into a closed graphite crucible (the structure and size are as attached Figure 1-2 ), control the graphite purity of the graphite crucible and the graphite crucible cover to be better than 50ppm, place the crucible in a high-temperature melting furnace, heat up to 1400°C for high-temperature melting f...

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

No PUM Login to view more

Abstract

The invention belongs to the technical field of scintillator materials, and particularly relates to a neutron detection glass scintillator and a preparation method and application thereof. According to the neutron detection glass scintillator, the high-purity graphite crucible is adopted for high-temperature melting treatment, a powerful strong reducing atmosphere is provided for glass melting, and a glass melt can be formed only through one-time melting; meanwhile, graphite micro powder falling off from the surface of the graphite crucible can uniformly enter the whole glass melt, so that the problems that carbon powder floats on the surface of the glass melt and carbon is included in frit due to the addition of a carbon powder reducing agent are effectively avoided, the yield and the quality of the product are effectively ensured, and the glass scintillator product is relatively high in cerium element content and relatively good in stability. The color of the glass is transparent light gray, the conditions of internal stripes and bubbles are greatly improved, and the product is better in performance, higher in yield, better in batch stability and better in application performance.

Description

technical field [0001] The invention belongs to the technical field of scintillator materials, and in particular relates to a neutron detection glass scintillator and its preparation method and application. Background technique [0002] Glass scintillator is a kind of energy conversion luminescent glass material with scintillation and luminescence characteristics. Under the irradiation of various ionizing radiations such as X-rays and γ-rays and high-energy particles such as thermal neutrons, α-rays, and β-rays, it can emit ultraviolet rays. Or the light in the visible region, and can be combined with various photomultiplier tubes, charge-coupled elements and photodiodes to realize the detection, screening and quantitative analysis of various ionizing radiation and high-energy particles. Compared with other types of scintillators (such as plastic scintillators, scintillation crystals, etc.), the preparation process of glass scintillators is relatively simple, and the perform...

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
IPC IPC(8): C03C4/12C03C3/095C03B19/02C03B25/00G01T3/06
CPCC03C4/12C03C3/095C03B19/02C03B25/00G01T3/06
Inventor 韩勖朱永昌关铭张海潮于雷赵崇
Owner CHINA BUILDING MATERIALS ACAD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap