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Lead-based neutron multiplier suitable for fusion reactor solid cladding

A fusion reactor, solid-state technology, applied in the field of nuclear fusion science, can solve the problems of high toxicity and high cost, and achieve the effect of increasing the rate of tritium production

Pending Publication Date: 2022-07-05
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The purpose of the present invention is to provide a lead-based neutron multiplier suitable for fusion reactor solid cladding, to solve the problems of high cost, strong toxicity and chemical activity of beryllium as a neutron multiplier

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  • Lead-based neutron multiplier suitable for fusion reactor solid cladding

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[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0015] like figure 1 As shown, the present invention proposes a lead-based neutron multiplier suitable for the solid cladding of fusion reactors, which adopts a three-layer core-shell spherical structure, including Pb x M y Ball center, Pb x M y -Li 2 O cermet interlayer and Pb x M y shell layer. the Pb x M y The core 1 as the neutron multiplication region is a lead-based intermetallic compound Pb with a high melting point...

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Abstract

The invention discloses a lead-based neutron multiplier suitable for a fusion reactor solid cladding, which adopts a composite sphere design of a three-layer core-shell structure: a PbxMy sphere core material is a lead-based intermetallic compound with high melting point and excellent neutron multiplication performance, including but not limited to LaPb3, CePb3, Zr5Pb4, Zr5Pb3, PrPb3, NbPb3, Nd5Pb4, Nd5Pb3 and PbS, and plays a role in neutron multiplication; the middle shell layer is a PbxMy-Li2O metal ceramic composite material, the comprehensive tritium breeding ratio of the cladding is improved through efficient tritium production of Li2O and fusion neutrons, meanwhile, the metal ceramic composite material and a PbxMy metal interface have good thermodynamic matching, and the overall core-shell structure is stable; and the PbxMy shell layer is a thin film, so that the overall chemical inertness of the spherical shell is ensured. The invention provides a neutron multiplier design which is good in economical efficiency and can meet the fusion reactor tritium breeding requirement, and a feasible solution can be provided for replacing pure beryllium.

Description

technical field [0001] The invention belongs to the field of nuclear fusion science, in particular to a lead-based neutron multiplier suitable for a solid cladding of a fusion reactor. Background technique [0002] Fusion energy has the advantages of abundant resources and near pollution-free. It has become an ideal energy source for the future of human society. It is one of the most promising fundamental ways to solve the energy problem. Basic frontier areas for long-term development. [0003] At present, magnetic confinement nuclear fusion research based on tokamak devices is extensive and progressing rapidly. The international cooperation project "International Thermonuclear Fusion Experimental Reactor" (ITER) has entered the construction stage. As a member of the project, my country plans to build and operate the China Fusion Engineering Experimental Reactor CFETR in the technical route for the development of magnetic confinement nuclear fusion energy from 2030 to 2040....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21B1/11
CPCG21B1/11
Inventor 张敏丁文艺刘静姜志忠肖尊奇郑明杰罗林
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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