Destructible 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: 2018-07-27
JILIN UNIV +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Destructible americium-beryllium neutron source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A destructible source of americium beryllium neutrons such as figure 1 As shown, the source core (1) is wrapped by a high-strength water filter membrane (2), and the centers of the eccentric runner (4) and the eccentric runner (5) are connected by studs (3), and the two eccentric The hole runner can rotate freely around the stud so that the eccentric holes on the two eccentric hole runners are aligned and communicated to form a channel; the solid strong alkali (6) is wrapped by an alkali-resistant water filter membrane (7), and the eccentric hole runner (9) is placed below it. ), the eccentric hole runner (10) and the pointed stud (8) form a rotatable channel switch; the water (11) is sealed in the water container, and the whole device is externally a source shell (13).

[0014] When the americium beryllium neutron source needs to be destroyed, the source body is turned upside down first, and the offset hole runners (9) and offset hole runners (10) are turned to align t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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: To produce neutrons, the common production method is to make 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 average neutron yield is 2...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G21G4/02
CPCG21G4/02
Inventor 许旭陆景彬张迪
Owner JILIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap