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
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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!
Latest Magazine Issues
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.
D. Rochman, M. Herman, S. F. Mughabghab, P. Oblozinský
Nuclear Science and Engineering | Volume 158 | Number 1 | January 2008 | Pages 68-77
Technical Paper | doi.org/10.13182/NSE08-A2739
Articles are hosted by Taylor and Francis Online.
Neutron-induced cross sections for 99Tc were evaluated from 10-5 eV to 20 MeV for the U.S. ENDF/B-VII.0 library released in December 2006. The resonance parameters were adopted from the new Atlas of Neutron Resonances. In the fast region, all open reaction channels were evaluated with the reaction code EMPIRE-2.19. Comparison of the present evaluation with microscopic measurements and data recommended by European (JEFF-3.1) and Japanese (JENDL-3.3) libraries is presented.
