ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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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 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.
M. Takagi, T. Norimatsu, Y. Kato, S. Nakai, C. Yamanaka
Fusion Science and Technology | Volume 14 | Number 2 | September 1988 | Pages 845-849
Tritium Properties and Interactions with Material | Proceedings of the Third Topical Meeting on Tritium Technology in Fission, Fusion and Isotopic Applications (Toronto, Ontario, Canada, May 1-6, 1988) | doi.org/10.13182/FST88-A25240
Articles are hosted by Taylor and Francis Online.
A compact tritium detector using inorganic fluorescent powders has been developed to measure the partial pressure of tritium in a deuterium-tritium mixture. The inside of the tritium detector was filled with the fluorescent powder which was optically coupled to a photon counter. Various fluorescent powders were evaluated in terms of sensitivity, linearity, signal-to-noise ratio and radiation damage. Within the measurement accuracy of ± 3%, intensity of fluorescence emitted from each fluorescent powder was completely proportional to the total DT gas pressure ranging from 0.07 atm to 7 atm and also to the tritium concentration in the mixture.
