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Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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Latest News
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
Seong Woo Kang, Jae-Hwan Yang, Man-Sung Yim
Nuclear Technology | Volume 206 | Number 10 | October 2020 | Pages 1593-1606
Technical Paper | doi.org/10.1080/00295450.2020.1713680
Articles are hosted by Taylor and Francis Online.
The purpose of this study is to examine the feasibility of using bismuth-embedded SBA-15 (Bi-SBA-15) as gaseous iodine filtration material for applications at higher temperatures, such as environmental release severe accident mitigation, while reducing the cost of production and maintaining its iodine adsorption capacity. It was shown that Bi-SBA-15 can be produced in a much more economically feasible way by (1) increasing the amount of the chemical reagents for SBA-15 synthesis, (2) decreasing the amount of other chemicals required to facilitate the chemical reactions, and (3) reducing the synthesis time, all while maintaining the iodine adsorption capability. Through both closed and open iodine adsorption experiments, it was shown that Bi-SBA-15 has a much higher adsorption capacity than silver-exchanged zeolites at 423°K (150°C) but decreases sharply as the temperature increases, resulting in about half of the iodine adsorption capacity of AgX at 523 K (250°C). Assuming that the commercialized cost of Bi-SBA-15 could be less than half of silver-exchanged zeolites, Bi-SBA-15 may be able to replace silver-exchanged zeolites at higher-temperature applications but only if the temperature of the gaseous iodine is less than 423 K (150°C) or if there is a presystem such as a pool scrubber to reduce the temperature of the gaseous iodine reaching the iodine filtration system. If Bi-SBA-15 can be produced much less expensively at a small fraction of cost compared with silver-exchanged zeolites, it may even be used at a temperature up to 523 K (250°C) with high enough iodine capture efficiency by simply increasing the mass of Bi-SBA-15 to more than double the mass of the required silver-exchanged zeolites.