Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Glass scintillator for thermal neutron detection and its preparation method

A thermal neutron and scintillator technology, which is applied in the field of scintillator materials and its preparation, can solve the problems of low detection efficiency of glass for neutrons and inability to detect thermal neutrons, and achieve high detection efficiency of thermal neutrons and resistance to deliquescence Strong performance, strong acid and alkali corrosion resistance

Active Publication Date: 2007-01-31
CHINA BUILDING MATERIALS ACAD
View PDF0 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also several units in China that have started research, but the detection efficiency of the studied glasses for neutrons is not high, mainly because neutrons have no charge and are neutral high-energy particles, so they cannot directly cause material ionization and are regarded as detection
The detection of neutrons must be achieved by means of secondary charged particles produced by the interaction with the nucleus, and the current domestic research on this type of glass is limited to the laboratory stage, and the studied glass has a large number of bubbles and stripes, which cannot be used for detection of thermal neutrons

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
  • Glass scintillator for thermal neutron detection and its preparation method
  • Glass scintillator for thermal neutron detection and its preparation method
  • Glass scintillator for thermal neutron detection and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] The present invention is a kind of Ce 3+ Li-Al-Si glass scintillator for the luminescent center. The research of the present invention shows that Ce 3+ Doped lithium-6 glass scintillator is an ideal detector for low-energy neutrons, especially thermal neutrons. It has the characteristics of short light decay time, good temperature performance and high thermal neutron detection efficiency. In addition, it is resistant to deliquescence Performance and acid and alkali corrosion resistance are strong, so in the harsh occasions of corrosive liquid and steam, Ce 3+ Doped Li-6 glass scintillators are almost the only available thermal neutron detectors.

[0041] Ce 3+ The detection of neutrons by doped lithium-6 glass scintillators is based on the nuclear reaction method. Its main component is Li 2 O, SiO 2 and Al 2 o 3 , containing a small amount of Ce 2 o 3 Used as an activator. Neutrons are injected into the scintillator and are 6 Li nuclear capture produces a nu...

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 present invention discloses a glass scintillator for detecting thermal neutron and its preparation method. It is characterized by that it uses Ce3+ as lithium-6 glass scintillation material, the lithium element is existed in the glass scintillator in the form of lithium-6 isotope, and has the action of producing nuclear reaction. The luminous efficiency of glass scintillator obtained by making raw materials undergo the three steps of preparing material, melting and annealing is 12% of NaI(T1), strongest emission wavelength is about 400nm, UV cut-off wavelength is 360nm, luminous decay time is about ns and thermal neutron detection efficiency is about 90%. Said glass scintillator mainly is used for detecting thermal neutron, and also can be used for detecting alpha ray, beta ray and gamma ray, etc.

Description

Technical field: [0001] The present invention relates to scintillator material and its preparation method, especially relate to can be used for thermal neutron detection with Ce 3+ A lithium-6 glass scintillator with a luminescent center. Background technique: [0002] A scintillator is a luminescent material that can convert the ionization energy of X-rays, r-rays or high-energy particles into ultraviolet / visible light. Since Hofstadter et al. discovered the scintillation properties of NaI:Tl crystals in 1948, the research, development and application of scintillators have made great progress. There are many kinds of scintillators, including solid scintillators, liquid scintillators and gas scintillators from the state of matter. For solid scintillators, they are divided into organic scintillators, crystal scintillators, glass scintillators, etc. Glass scintillator is an amorphous inorganic non-metallic material. It has the advantages of adjustable performance, simple pr...

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): C03C3/083C03C4/00
Inventor 高祀建朱永昌刘峻关铭
Owner CHINA BUILDING MATERIALS ACAD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com