Gamma-spectrometric determination of 232U in uranium-bearing materials

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:359

Article

Zsigrai, Jozsef¹  Nguyen, Tam Cong²  Berlizov, Andrey^1,3 

[1] Commiss European Communities, Joint Res Ctr, Inst Transuranium Elements ITU, D-76125 Karlsruhe, Germany

[2] Hungarian Acad Sci EK, Energy Res Ctr, H-1525 Budapest 114, Hungary

[3] Inst Nucl Res, UA-03680 Kiev, Ukraine

关键词: U-232;    Gamma spectrometry;    Reprocessed uranium;    Nuclear safeguards;    Nuclear forensics;   

DOI  :  10.1016/j.nimb.2015.07.047

来源: Elsevier

【 摘 要 】

The U-232 content of various uranium-bearing items was measured using low-background gamma spectrometry. The method is independent of the measurement geometry, sample form and chemical composition. Since U-232 is an artificially produced isotope, it carries information about previous irradiation of the material, which is relevant for nuclear forensics, nuclear safeguards and for nuclear reactor operations. A correlation between the U-232 content and U-235 enrichment of the investigated samples has been established, which is consistent with theoretical predictions. It is also shown how the correlation of the mass ratio U-232/U-235 VS. U-235 content can be used to distinguish materials contaminated with reprocessed uranium from materials made of reprocessed uranium. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

【 授权许可】

Free