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
Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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
Latest Journal Issues
Nuclear Science and Engineering
June 2025
Nuclear Technology
Fusion Science and Technology
May 2025
Latest News
IAEA Director General meets with key nuclear leaders in D.C.
International Atomic Energy Agency director general Rafael Mariano Grossi recently traveled to Washington, D.C., for the first time since Trump took office in January. In his three-day visit to the capital, Grossi spoke with key nuclear leaders from around the world and in the federal government, including Energy Secretary Chris Wright and Nuclear Regulatory Commission chair David Wright, on topics including nuclear power, safety, security, funding, and nonproliferation.
Technical Session|Criticality Safety
Friday, April 5, 2024|1:35–2:55PM EDT|Leonhard Building Room 103
Session Chair:
Caroline E. Ishak (Penn State University)
Alternate Chair:
Pierre Bouhaddane (Penn State University)
Session Organizer:
Jonathan B. Balog (Penn State University)
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Parametric Reflector Study for Moderated and Unmoderated Critical Fissile Systems
1:35–1:55PM EDT
Bradley T. Moore (Univ. Tennessee, Knoxville), Lorelei Uptmore (Y-12 National Security Complex), Dallas Moser (Y-12 National Security Complex)
Paper
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