利用共振电离质谱法测定乏核燃料样品的锕系元素比率。

IF 3.1 2区 化学 Q2 BIOCHEMICAL RESEARCH METHODS
Manuel Raiwa, Michael R Savina, Autumn G Roberts, Danielle Z Shulaker, Brett H Isselhardt
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引用次数: 0

摘要

虽然共振电离质谱法(RIMS)在测量复杂基质中元素的同位素组成方面已显示出其实用性,而无需通过化学分离来消除等压干扰,但它在测量元素组成方面的应用却很有限。通过 RIMS 等原位方法确定元素组成的能力将成为乏核燃料分析中的一项重要资产,因为乏核燃料对评估反应堆历史非常重要,而且其化学分离会带来放射性危害。然而,利用 RIMS 进行定量元素分析需要特别考虑,因为每种元素都是由其自身的一组激光器电离出来的,这些激光器调谐到元素特定的共振电离波长。我们介绍了利用 RIMS 测量乏核燃料中元素比率的首次全面研究。中子俘获产生的所有锕系元素都会从燃料芯块的中心向边缘径向显著增强。这种边缘效应无法通过传统的批量测量法轻易获得。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Actinide Elemental Ratios of Spent Nuclear Fuel Samples by Resonance Ionization Mass Spectrometry.

While resonance ionization mass spectrometry (RIMS) has demonstrated utility in measuring isotopic compositions of elements in complex matrices without the need for chemical separation to remove isobaric interferences, it has had limited application in measuring elemental compositions. The ability to determine elemental compositions via an in situ method like RIMS would be an exceptional asset in spent nuclear fuel analysis, where they are important in assessing reactor histories and whose chemical separation presents a radiological hazard. However, quantitative elemental analysis by RIMS requires special considerations because each element is ionized by its own set of lasers tuned to element specific resonant ionization wavelengths. We present the first comprehensive study of measuring elemental ratios by RIMS in spent nuclear fuel. All actinides produced by neutron capture are enhanced significantly radially from the center to the edge of a fuel pellet. This edge effect is not readily accessible by conventional bulk measurements.

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来源期刊
CiteScore
5.50
自引率
9.40%
发文量
257
审稿时长
1 months
期刊介绍: The Journal of the American Society for Mass Spectrometry presents research papers covering all aspects of mass spectrometry, incorporating coverage of fields of scientific inquiry in which mass spectrometry can play a role. Comprehensive in scope, the journal publishes papers on both fundamentals and applications of mass spectrometry. Fundamental subjects include instrumentation principles, design, and demonstration, structures and chemical properties of gas-phase ions, studies of thermodynamic properties, ion spectroscopy, chemical kinetics, mechanisms of ionization, theories of ion fragmentation, cluster ions, and potential energy surfaces. In addition to full papers, the journal offers Communications, Application Notes, and Accounts and Perspectives
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