Rare earth ion doped LuLaO3 ultrafast scintillation crystal, preparation method and application thereof

A rare earth ion and scintillation crystal technology, applied in the field of rare earth ion doped lanthanum lutetium oxide ultrafast scintillation crystal and its preparation, can solve the problems of limited commercial application and other problems, achieve short response time, reduce production cost, and stabilize optical performance Effect

Inactive Publication Date: 2019-10-18
NANJING TONGLI CRYSTAL MATERIALS RES INST CO LTD
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the melting point of the above-mentioned hafnium oxide crystal is 2830°C, and the melting point of lutetium oxide crystal is 2450°C, both of which are higher than the melting points of common crucible materials platinum (Pt), iridium (Ir), and molybd

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
  • Rare earth ion doped LuLaO3 ultrafast scintillation crystal, preparation method and application thereof
  • Rare earth ion doped LuLaO3 ultrafast scintillation crystal, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1

[0023] 1) Preparation of block: Yb with a purity of 99.99% 2 O 3 And Lu 2 O 3 , 99.999% La baked at 200℃ 2 O 3 As the initial raw material, and massage the ratio of 3:44.5:52.5 for ingredients. After the raw materials are fully mixed by ball milling, they are pressed into a cake by an isostatic press, which is put into an alumina ceramic crucible and put into a muffle furnace for sintering. The sintering temperature is 1500℃, constant temperature is 10 hours, and the temperature rise and fall rate is 100℃ / h.

[0024] 2) Crystal growth: use the pulling method for crystal growth, put the raw materials into the molybdenum metal crucible, and use pure Ar gas for protection. The temperature is increased to 2150°C to fully melt, and it is kept for about 10 minutes for the melt to form non-forced convection. After the seed crystal drops to 1-3cm above the liquid surface of the melt to roast the seeds, the speed is 5rad / , and the seeds are slowly inserted into the melt...

Example Embodiment

[0026] Example 2

[0027] 1) Preparation block: using Ce with a purity of 99.99% 2 O 3 And Lu 2 O 3 , 99.999% La baked at 200℃ 2 O 3 As the initial raw material, it is mixed with a molar ratio of 0.2:47.3:52.5. After the raw materials are fully ball milled and mixed, they are pressed into a thin rod with an isostatic press, the size of which is φ8*70mm, which is put into an alumina ceramic crucible and put into a muffle furnace for sintering. The sintering temperature is 1500℃, constant temperature is 10 hours, and the temperature rise and fall rate is 100℃ / h. After the calcination is completed, the material rods are processed and rounded to produce 2 φ5*70mm material rods, which are used as the material rod and seed crystal rod for the floating zone method of crystal growth.

[0028] 2) Crystal growth: using the floating zone method for crystal growth, using a high-power floating zone furnace from Sci-direct, with a slit efficiency of 12% incipient melting, 14% of the upper rod a...

Example Embodiment

[0030] Example 3

[0031] 1) Preparation of block: Yb with a purity of 99.99% 2 O 3 , CaCO 3 And Lu 2 O 3 , 99.999% La baked at 200℃ 2 O 3 As the initial raw material, and massage the ratio of 3:0.5:44:52.5 for ingredients. After the raw materials are fully mixed by ball milling, they are pressed into a cake by an isostatic press, which is put into an alumina ceramic crucible and put into a muffle furnace for sintering. The sintering temperature is 1500℃, constant temperature is 10 hours, and the temperature rise and fall rate is 100℃ / h.

[0032] 2) Crystal growth: use the pulling method for crystal growth, put the raw materials into the molybdenum metal crucible, and use pure Ar gas for protection. The temperature is increased to 2150°C to fully melt, and it is kept for about 10 minutes for the melt to form non-forced convection. After the seed crystal drops to 1-3cm above the melt level, the seed crystal is roasted at a speed of 5rad / , and the seed is slowly inserted into the m...

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 provides a rare earth ion doped LuLaO3 ultrafast scintillation crystal, which is a perovskite ABO3 structure that adopts intrinsic defect or rare earth ion as the activation ion, or rareearth ion as the main activation ion and is doped with a modulation ion, and also provides an appropriate production method of the scintillation crystal. While the production cost is lowered, the performance of the scintillation crystal is also ensured, especially in the high-energy ray detection field, the scintillation crystal has stable and excellent optical performance, and has the characteristic of short response time when acquiring 340nm wavelength fluorescence radiation under an excited state.

Description

technical field [0001] The invention belongs to the field of rare earth ion crystal growth, and in particular relates to a rare earth ion-doped lanthanum-lutetium oxide ultrafast scintillation crystal and a preparation method and application thereof. Background technique [0002] Scintillation material is a material that can absorb high-energy particles or rays and emit visible photons, and ultrafast scintillation material refers to a response time of less than 4ns (10 -9 s) The scintillator material. Such materials play a pivotal role in pulsed radiation detection, solar neutrino detection, and reaction dynamics, inertial confinement fusion, and cosmic ray research. [0003] Although different applications have different requirements for scintillators, scintillators are used to detect ionizing radiation in most applications, so scintillators are required to have a high blocking ability for ionizing radiation, that is, scintillators are required to have high dense and cont...

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): C30B29/22C30B15/00C30B13/00C09K11/78
CPCC09K11/7769C30B13/00C30B15/00C30B29/22
Inventor 赵衡煜徐军王东海李东振王庆国
Owner NANJING TONGLI CRYSTAL MATERIALS RES INST CO LTD
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