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<p>Several Zr-88 targets were prepared from an accelerator-produced solution of Zr-88. Small batch studies were performed to optimize the separation of Y-88 decay product from the desired Zr-88 parent in 2 M HCl using 2-diethylhexyl phosphoric acid (HDEHP) in n-dodecane. HDEHP was used to extract Zr-88, leaving the Y-88 decay product in the aqueous phase, followed by stripping the Zr-88 from the organic phase using oxalic acid. Oxalic acid was then decomposed by the addition of nitric acid and hydrogen peroxide under heating. The Zr-88 was then redissolved and dried onto a Kapton tape target. The separation resulted in 98% removal of the total Y content while significantly reducing the dose rate. The Zr-88 targets were then used for various nuclear data measurements at the n_TOF facility at CERN and the University of Texas at Austin TRIGA reactor.</p>

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Separation of Zr-88 and Y-88 by HDEHP for the preparation of a Zr-88 target for nuclear data measurements

  • 期刊论文

  • 发表日期：

    2026年1月2日

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  • J. L. Lapka,
  • D. D. Nolting,
  • W. Charlton,
  • J. Moldenhauer,
  • W. Flanagan

摘要

Several Zr-88 targets were prepared from an accelerator-produced solution of Zr-88. Small batch studies were performed to optimize the separation of Y-88 decay product from the desired Zr-88 parent in 2 M HCl using 2-diethylhexyl phosphoric acid (HDEHP) in n-dodecane. HDEHP was used to extract Zr-88, leaving the Y-88 decay product in the aqueous phase, followed by stripping the Zr-88 from the organic phase using oxalic acid. Oxalic acid was then decomposed by the addition of nitric acid and hydrogen peroxide under heating. The Zr-88 was then redissolved and dried onto a Kapton tape target. The separation resulted in 98% removal of the total Y content while significantly reducing the dose rate. The Zr-88 targets were then used for various nuclear data measurements at the n_TOF facility at CERN and the University of Texas at Austin TRIGA reactor.