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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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Fusion Science and Technology
Latest News
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
K.H. Bang, J.J. MacFarlane, J.J. Barry, M.L. Corradini
Fusion Science and Technology | Volume 19 | Number 3 | May 1991 | Pages 716-720
Inertial Fusion | doi.org/10.13182/FST91-A29429
Articles are hosted by Taylor and Francis Online.
Condensation within rapidly expanding metal vapors has been experimentally investigated by exploding wires in a test chamber filled with helium or argon at various pressures (10 millitorr to 760 torr). Lead and silver wires were vaporized using a 5.0 kV, 15.4 - 500 µF capacitor discharge system. It was observed that the metal vapor prefers to condense as droplets with a resulting fog or aerosol cloud as opposed to surface condensation. The debris analysis showed that the resulting aerosol particles were spherical and the size ranged from 0.02 to 0.2 microns, suggesting the vapor condensed by homogeneous nucleation. The time-dependent conditions of the expanding vapor were simulated using a 1-D hydrodynamics code. The calculations indicate that the vapor quickly becomes super-saturated due to expansion cooling. The implications of our results for nucleate condensation in ICF target chambers are also discussed.
