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Nuclide identification method, nuclide identification system and photoneutron emitter

An identification method and emitter technology, applied in the field of nuclide identification methods, identification such as 233U, nuclide identification systems and photoneutron emitters for nuclide identification, can solve problems such as weak specificity, and improve the The effect of accuracy

Active Publication Date: 2015-07-01
TSINGHUA UNIV +1
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  • Abstract
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  • Claims
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Problems solved by technology

However, the specificity of this method is not strong, and these signals alone cannot be accurately confirmed. 235 U nuclide

Method used

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  • Nuclide identification method, nuclide identification system and photoneutron emitter
  • Nuclide identification method, nuclide identification system and photoneutron emitter
  • Nuclide identification method, nuclide identification system and photoneutron emitter

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0038] Such as Figure 1 to 4 As shown, the nuclide identification system according to the present invention includes: a photoneutron emitter 10, a photoneutron detector 20, a photoneutron flight time timer, and a data processing unit. The photoneutron transmitter is used to emit photoneutrons with a predetermined energy range at a predetermined time, and the photoneutron detector is used to receive the photoneutrons emitted by the photoneutron transmitter to obtain the amount of photoneutrons received at each time, and the photoneutrons fly The time timer is used to record the flight time of the photoneutrons emitted by the photoneutron transmitter from the time when the photoneutrons are received by the photoneutron detector 20. The data processing unit is used for the light received by the photoneutron detector 20 at each moment. The number of neutrons and...

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Abstract

Embodiments of the present invention disclose a nuclide identification method, a nuclide identification system, and a photoneutron emitter. The photoneutron emitter comprises: a pulsed electron accelerator configured for emitting electrons; and a photoneutron converting target configured to receive the electrons emitted by the pulsed electron accelerator and convert the electrons into photoneutrons. The photoneutron converting target has a volume of about 100 to about 8000 cm3, of about 100 to about 2500 cm3, or of about 785 cm3. These embodiments of the present invention can improve an accuracy of identification of a nuclide, and provide a practical photoneutron emitter, method and system for identifying a nuclide. Especially, these embodiments of the present invention can improve an accuracy of identification of a fissile nuclide such as 233U, 235U, and 239Pu, and provide a practical photoneutron emitter, method and system for identifying a fissile nuclide such as 233U, 235U, and 239Pu.

Description

Technical field [0001] The present invention relates to a nuclide recognition method, a nuclide recognition system and a photoneutron emitter for nuclide recognition, especially for recognizing such 233 U, 235 U and 239 Method, system and photoneutron emitter of Pu fissile nuclide. Background technique [0002] In the security check, the inspection of fissile nuclides is very important. The so-called fissile nuclide mainly refers to 233 U, 235 U and 239 Pu and other nuclides that can induce fission by thermal neutrons. The counterpart is non-fissile nuclides, such as 238 U. If the uranium material 235 U abundance is high (for example, more than 90%), then it may be weapon-grade uranium material, on the contrary, if the abundance is very low (such as natural 0.7% or lower), it is depleted uranium. [0003] In actual work, it is very important to know whether a uranium material is enriched uranium or depleted uranium. This involves the treatment of the material. The former must be ...

Claims

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Application Information

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IPC IPC(8): H05H3/06G01T1/36
CPCG21G4/02G01N23/005G01T1/36G01V5/281
Inventor 陈志强杨祎罡王学武张勤俭陈怀璧李元景
Owner TSINGHUA UNIV
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