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Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
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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
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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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Fusion Science and Technology
May 2025
Latest News
Argonne’s METL gears up to test more sodium fast reactor components
Argonne National Laboratory has successfully swapped out an aging cold trap in the sodium test loop called METL (Mechanisms Engineering Test Loop), the Department of Energy announced April 23. The upgrade is the first of its kind in the United States in more than 30 years, according to the DOE, and will help test components and operations for the sodium-cooled fast reactors being developed now.
K. Hasegawa, H. Fusumae, M. Matsuyama, K. Watanabe
Fusion Science and Technology | Volume 21 | Number 2 | March 1992 | Pages 500-505
Safety; Measurement and Accountability; Operation and Maintenance; Application | doi.org/10.13182/FST92-A29796
Articles are hosted by Taylor and Francis Online.
The kinetics of the UV-stimulated HT oxidation in oxygen atmosphere was studied in combination with computer simulation consisting of 30 elementary reactions. The rate of HTO formation was observed to be proportional to the pressure of O2 and molar fraction of HT with respect to total hydrogen pressure (H2 + HT), and 1/2 order to total hydrogen pressure. The simulation resulted in the same pressure dependence as the observed one. The contributions of elementary reactions to the HTO formation were calculated, assuming steady states for intermediate species. It was revealed that the UV-stimulated HT oxidation is initiated by photolysis of O2 to O(3P) (λ < 242 nm) and subsequently formed O3 and OH play important roles in the HTO formation. The present results suggest that the conversion of tritium gas to tritiated water is considerably enhanced in the stratosphere owing to the presence of UV photons having shorter wavelengths than 242 nm.
