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Division Spotlight
Nuclear Nonproliferation Policy
The mission of the Nuclear Nonproliferation Policy Division (NNPD) is to promote the peaceful use of nuclear technology while simultaneously preventing the diversion and misuse of nuclear material and technology through appropriate safeguards and security, and promotion of nuclear nonproliferation policies. To achieve this mission, the objectives of the NNPD are to: Promote policy that discourages the proliferation of nuclear technology and material to inappropriate entities. Provide information to ANS members, the technical community at large, opinion leaders, and decision makers to improve their understanding of nuclear nonproliferation issues. Become a recognized technical resource on nuclear nonproliferation, safeguards, and security issues. Serve as the integration and coordination body for nuclear nonproliferation activities for the ANS. Work cooperatively with other ANS divisions to achieve these objective nonproliferation policies.
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.
Myron B. Reynolds
Nuclear Science and Engineering | Volume 3 | Number 4 | April 1958 | Pages 428-434
Technical Paper | doi.org/10.13182/NSE58-A25479
Articles are hosted by Taylor and Francis Online.
Data on the diffusion of fission krypton from irradiated 20 weight per cent uranium-aluminum alloy are presented. At temperatures below 640°C (the eutectic) there was no measurable loss of radiokrypton from this alloy during annealing periods of up to three weeks. At temperatures above the eutectic gas evolution occurred with a time dependence in rough agreement with the theoretical prediction for diffusion from spherical particles. The nature of the diffusion process for rare gases in metallic systems is discussed with particular reference to the limitations imposed on diffusion rate by solubility and available concentration gradient. The basic difference between the behavior of fission gases in dispersion-type nuclear fuels and in homogeneous solid-type fuels is outlined. The data on the uranium-aluminum alloy system are interpreted in light of this discussion.
