ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Apr 2025
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Nuclear Science and Engineering
May 2025
Nuclear Technology
Fusion Science and Technology
Latest News
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
C. F. Leitten, Jr., R. J. Beaver
Nuclear Technology | Volume 4 | Number 6 | June 1968 | Pages 399-417
Technical Paper and Note | doi.org/10.13182/NT68-A26366
Articles are hosted by Taylor and Francis Online.
Recent technological advancements have stimulated interest in lanthanide compounds as neutron absorbers. Specific fabrication procedures were developed for incorporating chemically stable europium oxide in stainless steel base neutron absorbers. The irradiation of europium oxide -stainless steel base absorbers to neutron absorptions as high as 6 x I021/cm3 resulted in no deleterious effects. The excellent performance of the europium oxide-stainless steel combination in the control rods of the SM-1 and SM-1A reactors further demonstrated their potential in pressurized water reactors. Arc fusion was found superior to conventional high-temperature heat treating for the production of either bulk or dense dispersoids of the lanthanide oxides. Europium molybdate and titanate are attractive compounds that resist attack by water. In addition to its superior resistance to corrosion by water at high temperature, europium molybdate has a substantial europium density. However9 like europium oxide9 it is only compatible with stainless steels having low silicon contents. Europium titanate has a lower europium density but acceptable resistance to water and superior compatibility with conventional stainless steels.
