Active fast neutron singles assay of 235U enrichment in small samples of triuranium octoxide
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- 作者：Helen M.O. Parkera ; Michael D. Aspinallb ; Alex Couturec ; Francis D. Caveb ; Christopher Orrc ; Bryan Swinsonc ; Malcolm J. Joycea ; m.joyce@lancaster.ac.uk" class="auth_mail" title="E-mail the corresponding author
- 关键词：Active neutron assay ; Enrichment ; Safeguards ; Scintillator ; Singles ; Uranium-235
- 刊名：Progress in Nuclear Energy
- 出版年：2016
- 出版时间：November 2016
- 年：2016
- 卷：93
- 期：Complete
- 页码：59-66
- 全文大小：1587 K
文摘
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A technique based on active interrogation with a AmLi source is proposed and demonstrated to assess uranium-235 enrichment.
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It uses real-time pulse-shape discrimination with organic scintillators in small samples of triuranium octoxide.
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It is demonstrated with 200 g samples spanning enrichment from depleted in uranium-235 (0.31% wt.) to 4.5% wt.
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It is robust to the scattering of neutrons from the source by the sample and yields competitive levels of sensitivity.