Scholarlink

<p>The GA Siwabessy Reactor, a 30&#xa0;MW multipurpose research reactor in Indonesia, has been utilized in producing molybdenum-99 (<sup>99</sup>Mo). This paper highlights the reactor's achievements in <sup>99</sup>Mo production via two methods: fission and neutron activation. Fission-produced <sup>99</sup>Mo has a high specific activity, which simplifies <sup>99m</sup>Tc production. However, it requires enriched uranium, a highly regulated material, and the process produces a lot of radioactive waste. In contrast, neutron-activated <sup>99</sup>Mo uses readily available molybdenum as a target material but results in low specific activity. Using the Cintichem method, the fission process yielded <sup>99</sup>Mo with a high specific activity of approximately 10<sup>4</sup>&#xa0;Ci/g Mo while neutron activation at GA Siwabessy reactor produced less than 1&#xa0;Ci/g Mo. Key advancements include successful low enriched uranium (LEU) foil target development which simplify dissolution and the successful development of high-capacity adsorbent materials for low specific activity <sup>99</sup>Mo. The use of LEU target, which produces large quantities of alpha emitters during the irradiation process, successfully yielded <sup>99</sup>Mo with low alpha impurities below 4.8 × 10<sup>–7</sup>&#xa0;mCi/mCi. Future efforts will focus on scaling up LEU-based production and improving neutron activation methods to meet growing domestic and regional demand. The reactor is planned to be revitalized to enhance safety and utilization capacity, as well as to increase the <sup>99</sup>Mo production capacity. By leveraging these advancements in both fission and neutron activation pathways, the reactor is expected to become a reliable supplier of <sup>99</sup>Mo for the East and Southeast Asia region.</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

Advancements and prospects in 99Mo production at Indonesia’s GA Siwabessy reactor: fission and neutron activation

  • 期刊论文

  • 发表日期：

    2025年12月22日

查看全文
  • Rohadi Awaludin,
  • Marlina,
  • Indra Saptiama,
  • Herlan Setiawan,
  • Agus Sunarto

摘要

The GA Siwabessy Reactor, a 30 MW multipurpose research reactor in Indonesia, has been utilized in producing molybdenum-99 (99Mo). This paper highlights the reactor's achievements in 99Mo production via two methods: fission and neutron activation. Fission-produced 99Mo has a high specific activity, which simplifies 99mTc production. However, it requires enriched uranium, a highly regulated material, and the process produces a lot of radioactive waste. In contrast, neutron-activated 99Mo uses readily available molybdenum as a target material but results in low specific activity. Using the Cintichem method, the fission process yielded 99Mo with a high specific activity of approximately 104 Ci/g Mo while neutron activation at GA Siwabessy reactor produced less than 1 Ci/g Mo. Key advancements include successful low enriched uranium (LEU) foil target development which simplify dissolution and the successful development of high-capacity adsorbent materials for low specific activity 99Mo. The use of LEU target, which produces large quantities of alpha emitters during the irradiation process, successfully yielded 99Mo with low alpha impurities below 4.8 × 10–7 mCi/mCi. Future efforts will focus on scaling up LEU-based production and improving neutron activation methods to meet growing domestic and regional demand. The reactor is planned to be revitalized to enhance safety and utilization capacity, as well as to increase the 99Mo production capacity. By leveraging these advancements in both fission and neutron activation pathways, the reactor is expected to become a reliable supplier of 99Mo for the East and Southeast Asia region.