Multilayer composite neutron target and preparation method thereof

A multi-layer composite and neutron technology, which is applied in the direction of nuclear reaction targets, accelerators, DC voltage accelerators, etc., to reduce the replacement of deuterium-tritium atoms, improve service life and neutron yield, and increase service life.

Inactive Publication Date: 2019-04-30
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] Aiming at the problems existing in the current use of neutron targets, the present invention proposes a multi-layer composite neutron target and its preparation method. The neutron target locks tritium firmly in the tritium storage film through multi-layer functional design , reduce the pollution of tritium penetration to cooling water, and the impact of tritium release on the life of neutron targets, which can meet the needs of fusion experiments

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  • Multilayer composite neutron target and preparation method thereof

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Embodiment 1

[0025] A multi-layer composite neutron target, comprising a surface tritium permeable layer 1, a tritium storage layer 2, an internal tritium permeable layer 3, a hydrogen isotope storage layer 4, a buffer guide layer 5 and a base layer 6 sequentially composited from top to bottom .

[0026] The inner tritium permeable layer is located between the hydrogen isotope storage layer and the tritium storage layer, and the surface tritium permeable layer is located on the surface of the tritium storage layer. The material of the base layer is chrome-zirconium copper, the buffer guide layer is metal palladium, the material of the internal tritium-resistant penetration layer is erbium oxide, the material of the surface tritium-resistant penetration layer is single-layer graphene, and the materials of the hydrogen isotope storage layer and the tritium storage layer Both are titanium-magnesium alloys, the thickness of the titanium-magnesium alloy film is 3 μm, and the atomic ratio of tit...

Embodiment 2

[0034] A multi-layer composite neutron target, including a surface tritium permeable layer 1, a tritium storage layer 2, an internal tritium permeable layer 3 and a base layer 6, which are sequentially composited from top to bottom. This embodiment does not include a hydrogen isotope storage layer and a tritium storage layer. Buffer boot layer. For the sake of concise description, the accompanying drawings will not be repeated.

[0035] The inner tritium permeable layer is located between the base layer and the tritium storage layer, and the surface tritium permeable layer is located on the surface of the tritium storage layer. The material of the base layer is chromium-zirconium copper, the material of the internal tritium-resistant permeable layer and the surface tritium-resistant permeable layer is single-layer graphene, the material of the tritium storage layer is titanium-magnesium alloy, the thickness of the titanium-magnesium alloy film is 3 μm, and the titanium-magnesi...

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Abstract

The invention discloses a multilayer composite neutron target which comprises a surface tritium barrier permeable layer, a tritium storage layer, an internal tritium barrier permeable layer, a hydrogen isotope storage layer, a buffer guiding layer and a base layer in order. The tritium storage layer is a core part of a neutron target and is mainly used for storing tritium, the effect of the surface tritium barrier permeable layer is to prevent the tritium in the tritium storage layer from diffusing to the base layer. According to the invention, a multilayer design is used, the tritium escape in the tritium storage layer is effectively reduced, the yield and service life of the neutron target are improved, and at the same time, the radioactive pollution caused by the escape of tritium is reduced.

Description

technical field [0001] The invention relates to the field of accelerator targets, in particular to a multilayer composite neutron target and a preparation method thereof. Background technique [0002] Fusion energy is one of the main ways to solve the future energy problems of human beings. In fusion reactors, neutrons carry 80% of fusion energy. In all stages of fusion research, the neutronic performance of materials and design schemes must be verified experimentally, for example, in the International Thermonuclear Experimental Reactor (ITER) program, the irradiation damage of cladding materials in the fusion neutron environment , tritium production rate and other research are key directions. The high-current deuterium-tritium neutron source bombards the tritium target with an accelerated deuterium ion beam, and a deuterium-tritium fusion reaction produces fusion neutrons of 14.1MeV, which is the same energy as the neutrons produced by fusion. It can truly simulate the neu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H6/00
CPCH05H6/00
Inventor 吴宜灿张思纬胡丽琴王芳刘超王永峰王志刚
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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