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
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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 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.
Sidney Katz, George I. Cathers
Nuclear Technology | Volume 5 | Number 1 | July 1968 | Pages 5-10
Technical Paper and Note | doi.org/10.13182/NT68-A27978
Articles are hosted by Taylor and Francis Online.
In the search for an efficient sorption-desorption system for recovering and purifying plutonium hexafluoride, 31 candidate metal fluorides were tested. Of these, the fluorides of the IA and IIA metals were found to react (or sorb) most favorably and were therefore selected for further study. Results of extensive tests, in which the sorption and desorption capabilities of these more promising fluorides were considered, indicated that only lithium fluoride was effective in both respects. A chemical equilibrium was found to exist between plutonium hexafluoride, fluorine, lithium fluoride, and a complex (probably Li4PuF8) containing Pu(IV). The sorption of plutonium hexafluoride was much improved as the surface area of the lithium fluoride was increased. Plutonium hexafluoride containing no detectable uranium hexafluoride was obtained from a mixture by a sorption-desorption separation.
