Study on the direct measurement method for trace plutonium in samples from spent fuel reprocessing

International Journal of Advanced Nuclear Reactor Design and Technology Pub Date : 2025-06-04 DOI:10.1016/j.jandt.2025.06.001

Li Li , Han Yang , Yingtong Fang , Xianlong Chang , Yuning Niu , Guodu Jiang , Songtao Yang , Zhiheng Wang , Zhaoqing Zhang , Yurong Li , Quanwei Liu

{"title":"Study on the direct measurement method for trace plutonium in samples from spent fuel reprocessing","authors":"Li Li , Han Yang , Yingtong Fang , Xianlong Chang , Yuning Niu , Guodu Jiang , Songtao Yang , Zhiheng Wang , Zhaoqing Zhang , Yurong Li , Quanwei Liu","doi":"10.1016/j.jandt.2025.06.001","DOIUrl":null,"url":null,"abstract":"<div><div>To directly, rapidly, and accurately measure trace plutonium in reprocessing samples, two α scintillation counters were developed for the direct measurement of liquids and solids after source preparation. An analytical method for directly determining trace plutonium in process samples was established. Both counters used ZnS(Ag) crystals sprayed onto light-guiding plexiglass as detectors for measuring α nuclide activity concentrations in complex samples containing simultaneous α, β, and γ nuclides. Test results indicated a 75.2 % detection efficiency for the first α scintillation counter for <sup>239</sup>Pu surface sources with good linearity over the concentration range 5 × 10<sup>−6</sup> g/L to 1 × 10<sup>−3</sup> g/L in aqueous plutonium solutions. It could also directly measure the α activity concentration in aqueous Pu solutions without source preparation. The second α scintillation counter, used a baking-dish measurement method. It exhibited excellent linearity for aqueous plutonium concentrations over 1.0 × 10<sup>−5</sup> to 1 × 10<sup>−3</sup> g/L with ≤1 % precision in the 5 × 10<sup>−5</sup> to 1 × 10<sup>−2</sup> g/L range. Both systems featured rapid and simple operation.</div></div>","PeriodicalId":100689,"journal":{"name":"International Journal of Advanced Nuclear Reactor Design and Technology","volume":"7 3","pages":"Pages 195-202"},"PeriodicalIF":0.0000,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Advanced Nuclear Reactor Design and Technology","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2468605025000626","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

To directly, rapidly, and accurately measure trace plutonium in reprocessing samples, two α scintillation counters were developed for the direct measurement of liquids and solids after source preparation. An analytical method for directly determining trace plutonium in process samples was established. Both counters used ZnS(Ag) crystals sprayed onto light-guiding plexiglass as detectors for measuring α nuclide activity concentrations in complex samples containing simultaneous α, β, and γ nuclides. Test results indicated a 75.2 % detection efficiency for the first α scintillation counter for ²³⁹Pu surface sources with good linearity over the concentration range 5 × 10⁻⁶ g/L to 1 × 10⁻³ g/L in aqueous plutonium solutions. It could also directly measure the α activity concentration in aqueous Pu solutions without source preparation. The second α scintillation counter, used a baking-dish measurement method. It exhibited excellent linearity for aqueous plutonium concentrations over 1.0 × 10⁻⁵ to 1 × 10⁻³ g/L with ≤1 % precision in the 5 × 10⁻⁵ to 1 × 10⁻² g/L range. Both systems featured rapid and simple operation.

查看原文本刊更多论文

乏燃料后处理样品中痕量钚的直接测定方法研究

为了直接、快速、准确地测量后处理样品中的痕量钚，研制了两个α闪烁计数器，用于直接测量源制备后的液体和固体。建立了直接测定工艺样品中痕量钚的分析方法。这两种计数器都使用喷镀在导光有机玻璃上的ZnS（Ag）晶体作为检测器，用于测量同时含有α、β和γ核素的复杂样品中的α核素活性浓度。实验结果表明，在钚水溶液中浓度为5 × 10−6 g/L ~ 1 × 10−3 g/L范围内，第一个α闪烁计数器对239Pu表面源的检测效率为75.2%，线性良好。该方法也可直接测定Pu水溶液中α活度的浓度。第二个α闪烁计数器，采用烤盘测量法。该方法在1.0 × 10−5 ~ 1 × 10−3 g/L范围内线性良好，在5 × 10−5 ~ 1 × 10−2 g/L范围内精度≤1%。这两种系统都具有操作快速、简便的特点。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Advanced Nuclear Reactor Design and Technology

CiteScore

2.50

自引率

0.00%

发文量