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<p>Sulfur serves as a common target material for reactor-based production of phosphorus-32 (<sup>32</sup>P) through the <sup>32</sup>S(n,p)<sup>32</sup>P reaction. The present study assesses the radiochemical performance of recycled sulfur, recovered from previous production residues, in comparison with fresh sulfur under identical irradiation conditions. Recycled sulfur yielded 133&#xa0;mCi of <sup>32</sup>P from 3&#xa0;g of target material, whereas fresh sulfur produced 149&#xa0;mCi, with both maintaining radionuclidic and radiochemical purities above 95%. These findings suggest that irradiation and chemical processing do not substantially diminish sulfur’s capacity to generate and release recoil <sup>32</sup>P during subsequent irradiation cycles.</p>

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Evaluation of fresh and recycled sulfur targets for repeated reactor-based phosphorus-32 (32P) production

  • 期刊论文

  • 发表日期：

    2026年5月23日

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  • Chaidir Pratama,
  • Wira Y. Rahman,
  • Marlina,
  • Anas Fahmi Imron,
  • Isna Syilmi Qaira,
  • Ahid Nurmanjaya,
  • Fani Triyatna,
  • Endang Sarmini,
  • Aceu Turyana,
  • Ega Pratama Hadinoto,
  • Imam Prasetyo,
  • Teguh Ariyanto

摘要

Sulfur serves as a common target material for reactor-based production of phosphorus-32 (32P) through the 32S(n,p)32P reaction. The present study assesses the radiochemical performance of recycled sulfur, recovered from previous production residues, in comparison with fresh sulfur under identical irradiation conditions. Recycled sulfur yielded 133 mCi of 32P from 3 g of target material, whereas fresh sulfur produced 149 mCi, with both maintaining radionuclidic and radiochemical purities above 95%. These findings suggest that irradiation and chemical processing do not substantially diminish sulfur’s capacity to generate and release recoil 32P during subsequent irradiation cycles.