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A Destroyable Americium Beryllium Neutron Source

A neutron source, americium beryllium technology, which is applied in the field of nuclear technology application, can solve the problems of high risk and high processing cost, and achieve the effect of reuse

Inactive Publication Date: 2019-06-11
JILIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The half-life of the americium beryllium neutron source is 433 years, and the neutron output will not change too much within a predictable time. When the radioactive source needs to be scrapped and destroyed, it can only be treated as Class I radioactive waste for deep ground disposal. In fact, it needs to be buried in the ground for more than 10,000 years to reach the exemption level. The processing cost is extremely high and the danger after leakage is extremely high.

Method used

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  • A Destroyable Americium Beryllium Neutron Source

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Embodiment 1

[0014] A destructible source of americium beryllium neutrons such as figure 1 As shown, the americium beryllium source core (1) is wrapped by a high-strength water filter membrane (2), and the center of the first eccentric hole runner (4) and the second eccentric hole runner (5) are connected by studs (3) below it. and the first eccentric hole runner (4) and the second eccentric hole runner (5) can freely rotate around the studs so that the eccentric holes on the two eccentric hole runners are aligned and communicated to form a channel; the solid strong base (6) is Alkali-resistant water filter membrane (7) is wrapped, and its below is formed rotatable channel switch by the 3rd eccentric runner (9), the 4th eccentric runner (10) and band pointed stud (8); Water (11 ) is sealed in the water container, and the outside of the whole device is a source shell (13).

[0015] When the americium beryllium neutron source needs to be destroyed, the source body is turned upside down firs...

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Abstract

The invention discloses a destructible americium-beryllium neutron source and belongs to the technical field of nuclear application. According to the invention, a device structure is designed so thatwhen an americium-beryllium neutron source is needed to be destroyed, a source core of a radioactive source is soaked by a strong alkali solution, and metal beryllium in the source core is dissolved;then AmO2 in the source core is separated from the metal beryllium by using a filter screen, so that the alpha particles emitted from 241Am are prevented from bombarding the metal beryllium, a 9Be(alpha,n)12C reaction is stopped, and then the production of neutrons is stopped. According to the invention, a scrapped americium-beryllium neutron source can be conveniently destroyed, so that neutronsare no longer ejected, the harm to human bodies is reduced, and the treatment cost of the discarded americium-beryllium neutron source is reduced; meanwhile, the remaining AmO2 can be used as a low-energy gamma source, so that the repeated use of radioactive waste materials is realized.

Description

technical field [0001] The invention belongs to the application field of nuclear technology, and is a destructible neutron source capable of separating americium and beryllium to stop neutron generation. technical background [0002] The americium beryllium neutron source is one of the most commonly used neutron sources at present, and its principle is to use the alpha source 241 The α particles emitted by Am decay bombard beryllium metal, and the (α,n) reaction occurs: α+ 9 Be → 12 C+n, to produce neutrons, the common production method is to combine AmO 2 After fully mixing with beryllium powder, inject the source shell in the mold several times. After each injection, use a hammer to 2 The above pressure is compressed to make a tablet, and the source shell is taken out from the mold and placed on the source cover for welding and sealing. The half-life of the americium beryllium neutron source is the alpha source 241 The half-life of Am is about 433 years, and the avera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21G4/02
CPCG21G4/02
Inventor 许旭陆景彬张迪
Owner JILIN UNIV
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