Scholarlink

<p>The model age of a nuclear material is crucial in nuclear forensic analysis. Uranium metals with complex production histories often exhibit discordant model ages from the <sup>230</sup>Th–<sup>234</sup>U and <sup>231</sup>Pa–<sup>235</sup>U chronometers. Recent studies involving targeted uranium metal castings have enhanced our understanding of decay product behavior during casting, aiding nuclear forensic interpretation. Building on this prior work, forensics laboratories at Atomic Weapons Establishment (AWE), Lawrence Livermore National Laboratory (LLNL), and Los Alamos National Laboratory (LANL) conducted an interlaboratory comparison to investigate spatial heterogeneity in uranium metal cast under controlled conditions. Each laboratory measured samples of a mixed feedstock and its corresponding cast product. This work furthers our understanding of discordant model ages and the use of discordance as a signature to enhance confidence in interpretations of radiochronometric data for nuclear forensics.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Radiochronometric discordance in cast uranium metal: a multi-laboratory intercomparison exercise

  • 期刊论文

  • 发表日期：

    2025年8月19日

查看全文
  • Matthew A. Higginson,
  • Christine Yifeng Chen,
  • Joanna S. Denton,
  • Robert E. Steiner,
  • Alexander Ainge,
  • Sam Cross,
  • Ashley Cocciadiferro,
  • James A. Dunne,
  • Mark A. Edwards,
  • John Engel,
  • Amy M. Gaffney,
  • Chris R. D. Gilligan,
  • Adelicia Johnson,
  • Philip Kaye,
  • Theresa M. Kayzar-Boggs,
  • Stephen P. LaMont,
  • Natalie T. Rice,
  • Matthew E. Sanborn,
  • Alice Shilling,
  • Allison M. Wende

摘要

The model age of a nuclear material is crucial in nuclear forensic analysis. Uranium metals with complex production histories often exhibit discordant model ages from the 230Th–234U and 231Pa–235U chronometers. Recent studies involving targeted uranium metal castings have enhanced our understanding of decay product behavior during casting, aiding nuclear forensic interpretation. Building on this prior work, forensics laboratories at Atomic Weapons Establishment (AWE), Lawrence Livermore National Laboratory (LLNL), and Los Alamos National Laboratory (LANL) conducted an interlaboratory comparison to investigate spatial heterogeneity in uranium metal cast under controlled conditions. Each laboratory measured samples of a mixed feedstock and its corresponding cast product. This work furthers our understanding of discordant model ages and the use of discordance as a signature to enhance confidence in interpretations of radiochronometric data for nuclear forensics.