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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
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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
DOE extends Centrus’s HALEU production contract by one year
Centrus Energy has announced that it has secured a contract extension from the Department of Energy to continue—for one year—its ongoing high-assay low-enriched uranium (HALEU) production at the American Centrifuge Plant in Piketon, Ohio, at an annual rate of 900 kilograms of HALEU UF6. According to Centrus, the extension is valued at about $110 million through June 30, 2026.
N. Papmehl, Hans J. Zech
Nuclear Science and Engineering | Volume 47 | Number 4 | April 1972 | Pages 435-448
Technical Paper | doi.org/10.13182/NSE72-A22435
Articles are hosted by Taylor and Francis Online.
An explicit formulation of the one-velocity order of scattering method for neutrons is developed assuming plane geometry and anisotropic scattering. Calculations for the half-space albedo problem based on this method were performed for isotropic scattering and were checked against known results. Further numerical studies of reflection and transmission of slabs yield detailed information about the order of scattering needed for a desired accuracy and for given thickness and absorption of the slab. For slab thickness up to one mean-free-path eighth order of scattering is shown to yield deviations from exact values of <1%.
