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<p>High specific activity Ba<sup>14</sup>CO<sub>3</sub> was prepared by nuclear reaction <sup>14</sup>N (n,p)<sup>14</sup>C in High Flux Engineering Test Reactor (HFETR). Regarding high-purity aluminum nitride (AlN) as target material, Ba<sup>14</sup>CO<sub>3</sub> solid was prepared by a dry method extraction process after being irradiated for approximately 700&#xa0;days under the condition of thermal neutron fluence rate about 1 × 10<sup>14</sup>&#xa0;cm<sup>−2</sup>&#xa0;s<sup>−1</sup>. In this study, the specific activity of produced Ba<sup>14</sup>CO<sub>3</sub> was higher than 56&#xa0;mCi/mmol, and the content of<i> γ</i>-impurity nuclides is less than 0.01%. Thus, it can be used for the preparation of various carbon-14 labeled compounds. This study can be a notable reference for large-scale preparation of Ba<sup>14</sup>CO<sub>3</sub> with high specific activity.</p>

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Preparation of high specific activity barium carbonate-14 in high flux engineering test reactor

  • 期刊论文

  • 发表日期：

    2025年3月20日

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  • Jianrong Wu,
  • Zhizhong Sun,
  • Jinsong Zhang,
  • Bo Li,
  • Junjie Zeng,
  • Yunming Chen,
  • Tao Hu,
  • Qiru Cao,
  • Ning Luo

摘要

High specific activity Ba14CO3 was prepared by nuclear reaction 14N (n,p)14C in High Flux Engineering Test Reactor (HFETR). Regarding high-purity aluminum nitride (AlN) as target material, Ba14CO3 solid was prepared by a dry method extraction process after being irradiated for approximately 700 days under the condition of thermal neutron fluence rate about 1 × 1014 cm−2 s−1. In this study, the specific activity of produced Ba14CO3 was higher than 56 mCi/mmol, and the content of γ-impurity nuclides is less than 0.01%. Thus, it can be used for the preparation of various carbon-14 labeled compounds. This study can be a notable reference for large-scale preparation of Ba14CO3 with high specific activity.