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
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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
Jan 2025
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Nuclear Science and Engineering
June 2025
Nuclear Technology
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.
The nomination period for the 2025 Nuclear News 40 Under 40 list is now open. The list aims to highlight those who are putting in the work to become leaders in the nuclear community. All nominations must be submitted online by 11:59 p.m. (CST) on April 30, 2025.
Nominees must be 39 years old or younger and must be current members of ANS through December 31, 2025. Candidates can be nominated either by their workplace or institution or by a fellow ANS member and should have at least one letter of recommendation.
All nominees will be evaluated by NN staff on a variety of factors, including but not limited to the following: technical achievements, professional achievements, leadership and impact.
Finally, nominees who were included in the 2024 40 under 40 list are not eligible for the 2025 40 under 40 list.
If you have questions about the form, please email nucnews@ans.org for assistance.
Nominee's Sector *
Nominee's Contact Information
Sponsor's Contact Information
Nominee's CV or Resume, Limit 1
Recommendation Letter(s), Limit 2