Nd and Sm isotopic composition of spent nuclear fuels from three material test reactors

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• 作者：Nicholas Sharp ; Brian W. Ticknor&#8230
• 关键词：Multi ; collector inductively ; coupled plasma mass spectrometry ; Spent nuclear fuel ; Chromatography ; Nd and Sm isotopic ratios ; Nuclear forensics
• 刊名：Journal of Radioanalytical and Nuclear Chemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：311
• 期：1
• 页码：801-808
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Nuclear Chemistry; Physical Chemistry; Nuclear Physics, Heavy Ions, Hadrons; Diagnostic Radiology; Inorganic Chemistry;
• 出版者：Springer Netherlands
• ISSN：1588-2780
• 卷排序：311

文摘

Rare earth elements such as neodymium and samarium are ideal for probing the neutron environment that spent nuclear fuels are exposed to in nuclear reactors. The large number of stable isotopes can provide distinct isotopic signatures for differentiating the source material for nuclear forensic investigations. The rare-earth elements were isolated from the high activity fuel matrix via ion exchange chromatography in a shielded cell. The individual elements were then separated using cation exchange chromatography. The neodymium and samarium aliquots were analyzed via MC–ICP–MS, resulting in isotopic compositions with a precision of 0.01–0.3%.