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
Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
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!
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Latest News
ANS designates Armour Research Foundation Reactor as Nuclear Historic Landmark
The American Nuclear Society presented the Illinois Institute of Technology with a plaque last week to officially designate the Armour Research Foundation Reactor a Nuclear Historic Landmark, following the Society’s decision to confer the status onto the reactor in September 2024.
A. H. Futch, Jr.
Nuclear Science and Engineering | Volume 5 | Number 1 | January 1959 | Pages 61-67
Technical Paper | doi.org/10.13182/NSE59-A27332
Articles are hosted by Taylor and Francis Online.
The ratio,δ, of U238 to U235 fissions was measured for various natural uranium fuel assemblies in D2O-moderated reactor lattices. Fuel element types studied included clusters of from one to nine 1-in. rods, tubular assemblies, and plate assemblies. The measurements were made by comparing the activations of depleted and natural uranium foils after irradiating them inside the fuel assemblies in an exponential facility. As a corollary to these experiments, relative decay rates were determined for the gamma activities of the U238 and U235 fission products.
