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
CN108335776BInactive Publication Date: 2019-06-11JILIN UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JILIN UNIV
Publication Date
2019-06-11
Estimated Expiration
Not applicable · inactive patent

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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.
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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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