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Glass optical fiber for neutron detection, scintillation material and preparation method thereof

A technology of scintillation material and glass optical fiber, applied in the field of scintillation material and its preparation, and glass optical fiber, can solve the problems of low spatial resolution and low detection efficiency, improve position resolution, expand application occasions and scope, and increase detection The effect of efficiency and detection accuracy

Pending Publication Date: 2020-06-19
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Modern scintillation detectors are mainly composed of scintillator (and its shell) and photomultiplier tube. The structure of scintillation detector is relatively simple, the detection efficiency is not high and its spatial resolution is relatively low, and it is limited by the shape and size of scintillator. The application occasions and application fields are greatly restricted, so how to improve the detection efficiency and spatial resolution of scintillation detectors, as well as the application occasions and application fields are the research focus of radiation detection imaging technology

Method used

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  • Glass optical fiber for neutron detection, scintillation material and preparation method thereof
  • Glass optical fiber for neutron detection, scintillation material and preparation method thereof
  • Glass optical fiber for neutron detection, scintillation material and preparation method thereof

Examples

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preparation example Construction

[0048] A kind of glass optical fiber designed by the present invention, its preparation method can comprise the following steps:

[0049] Weigh the purity of more than 90% in the fume hood 6 LiH powder, divided into multiple parts and reacted with appropriate amount of deionized water, each part ≤ 1.5g; specifically, first part 6 Add LiH powder into a plastic beaker with a capacity of 500ml to 2000ml, and then carefully and slowly add deionized water into the plastic beaker with a plastic dropper. 6 LiH powder reacts violently, forming 6 LiOH, a large amount of gas is released, after adding deionized water, use a plexiglass rod to stir until 6 LiH reacts completely with water to obtain a clear and transparent liquid, and then add a portion to the plastic beaker in turn 6 LiH powder and deionized water, stir until the reaction is complete, and finally a certain amount of 6 LiH powder reacts with deionized water completely transparent 6 LiOH solution;

[0050] will get 6 ...

Embodiment 1

[0060] Embodiment 1 specifically comprises the steps:

[0061] Weigh in a fume hood with a purity of more than 90.5% 6 LiH powder, divided into several parts and reacted with appropriate amount of deionization, each part 1.5g; specifically, first part 6 LiH powder was added to a plastic beaker with a capacity of 2000ml, and then deionized water was carefully and slowly added to the plastic beaker with a plastic dropper, and the deionized water was mixed with 6 LiH powder reacts violently, forming 6 LiOH, a large amount of gas is released, after adding deionized water, use a plexiglass rod to stir until 6 LiH reacts completely with water to obtain a clear and transparent liquid, and then add a portion to the plastic beaker in turn 6 LiH powder and deionized water, stir until the reaction is complete, and finally a certain amount of 6 LiH powder reacts with deionized water completely transparent 6 LiOH solution;

[0062] will get 6 Pour the LiOH aqueous solution into a cl...

Embodiment 2

[0072] Example 2, the difference from Example 1 is that the Li 2 The composition ratio of O reduces the Al 2 o 3 , SiO 2 The proportion of ingredients increases the Ce 2 o 3 The proportion of ingredients, specifically includes the following steps:

[0073] Weigh in a fume hood with a purity of more than 90.5% 6 LiH powder is divided into several parts and reacted with appropriate amount of deionized water, each part is 1.0g; specifically, one part is first 6 LiH powder was added to a plastic beaker with a capacity of 1000ml, and then deionized water was carefully and slowly added to the plastic beaker with a plastic dropper, and the deionized water was mixed with 6 LiH powder reacts violently, forming 6 LiOH, a large amount of gas is released, after adding deionized water, use a plexiglass rod to stir until 6 LiH reacts completely with water to obtain a clear and transparent liquid, and then add a portion to the plastic beaker in turn 6 LiH powder and deionized water,...

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Abstract

The invention provides a glass optical fiber for neutron detection. The glass optical fiber comprises a fiber core and a cladding tube coating the outer layer of the fiber core, the fiber core is madeof a scintillation material and is used as a scintillator of the neutron detector; and the cladding tube is made of a high-purity quartz material and is used as a scintillator shell of the neutron detector. The scintillation material is prepared into the glass optical fiber so that total reflection of scintillation of activator ions in the fiber core can be realized; when the glass optical fiberis used for neutron and gamma ray detection, the position resolution of thermal neutron detection can be greatly improved, and the glass optical fiber is easy to design and process into various detector structures. The invention also provides a preparation method for preparing the glass optical fiber.

Description

technical field [0001] The invention relates to the technical field of neutron detection, in particular to a glass optical fiber for neutron detection, a scintillation material and a preparation method thereof. Background technique [0002] Scintillation detectors are detected by using the flashes of ionizing radiation in certain substances, and are currently one of the most widely used ionizing radiation detectors, and their core components are scintillators. A scintillator is a luminescent material that converts the ionization energy of X-rays, gamma rays, or high-energy particles into ultraviolet / visible light. As early as 1903, William Crooks invented the scintillation mirror made of zinc sulfide fluorescent material and used it to observe the radiation emitted by the decay of radium. Rutherford also used sulfide in his famous Rutherford scattering experiment. Zinc phosphor screen to observe alpha particles. However, due to the inconvenient use of traditional fluoresce...

Claims

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Application Information

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IPC IPC(8): C03C13/04C03B37/025G01T3/06
CPCC03C13/045C03B37/025G01T3/06
Inventor 陈艳平雷洪波李强程浩唐贤臣黄斌罗德礼
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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