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
Accelerator Applications
The division was organized to promote the advancement of knowledge of the use of particle accelerator technologies for nuclear and other applications. It focuses on production of neutrons and other particles, utilization of these particles for scientific or industrial purposes, such as the production or destruction of radionuclides significant to energy, medicine, defense or other endeavors, as well as imaging and diagnostics.
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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Nuclear Science and Engineering
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Nuclear Technology
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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.
J. I. Federer, C. F. Leitten, Jr.
Nuclear Technology | Volume 1 | Number 6 | December 1965 | Pages 575-580
Technical Paper | doi.org/10.13182/NT65-A20586
Articles are hosted by Taylor and Francis Online.
Deposition of tungsten-rhenium alloys by the simultaneous hydrogen reduction of tungsten and rhenium hexafluorides has been studied over the temperature range 450 to 700°C using a total system pressure of 10 torr and a H2/(WF6 + ReF6) ratio of about 20. Deposits formed on the inner wall of heated copper deposition tubes through which the reacting gases passed. Under these conditions the greater ease of reduction of ReFe6 compared to WF6 resulted in nonuniform deposits having a higher rhenium content near the inlet to the reaction zone than farther downstream. Deposits containing up to 46 wt% Re have been prepared. The use of argon with the reacting gases was found to improve homogeneity. The deposits were found to contain total interstitial impurities as low as 50 parts/106. The grain structure was typically columnar. X-ray diffraction revealed the presence of two phases that coexisted throughout part of the composition range: an alpha-tungsten (bcc) structure, which was the principal phase in low rhenium deposits, and a previously unreported beta-tungsten phase, which was favored by high rhenium contents.
