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- Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
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  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.
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  Nuclear and Emerging Technologies for Space (NETS 2025)
  May 4–8, 2025
  Huntsville, AL|Huntsville Marriott and the Space & Rocket Center
Standards
- 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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  June 2025
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  June 2025
  Fusion Science and Technology
  May 2025
- Latest News
  Fusion Energy Week begins today
  Excitement around fusion has only grown this year since the French magnetic confinement fusion tokamak known as WEST maintained a plasma for 1,337 seconds in February, toppling the 1,006-second record set by China’s EAST a few weeks prior. Investment, legislation, and new research are riding this new surge of attention, but fusion development has a long history.
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Development of Lagrangian Particle Method for Temperature Distribution Formed by Sodium-Water Reaction in a Tube Bundle System

Wataru Kosaka (Japan Atomic Energy Agency), Akihiro Uchibori (Japan Atomic Energy Agency), Yasushi Okano (Japan Atomic Energy Agency), Hideki Yanagisawa (NESI Corporation)

Proceedings | 20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-20) | Washington, D.C., August 20-25, 2023 | Pages 1150-1163