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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.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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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Molten salt research is focus of ANS local section presentation
The American Nuclear Society’s Chicago–Great Lakes Local Section hosted a presentation on February 27 on developments at the molten salt research reactor at Abilene Christian University’s Nuclear Energy Experimental Testing (NEXT) Lab.
A recording of the presentation is available on the ANS website.
N. J. Pattenden
Nuclear Science and Engineering | Volume 17 | Number 3 | November 1963 | Pages 371-380
Technical Paper | doi.org/10.13182/NSE63-A17385
Articles are hosted by Taylor and Francis Online.
The ORNL chopper has been used to measure the neutron total cross sections of samples of fission product samarium and iodine in the thermal and resonance energy regions. At 2200 meters/sec, the total cross section of Sm151 was found to be (15000 ± 1800) barns, and the absorption cross section of I129 (28.0 ± 2) barns. The variation of cross section of Sm151 with energy in the thermal region was found to be strongly affected by a bound level, but in the case of I129 the absorption cross section could be described by a “1/V” dependence. In the higher energy region, resonance parameters were obtained for Sm151, I127, and I129 by area analysis of the observed transmission dips. In addition, a shape analysis method was used for the lower energy resonances in Sm151. The following values for the level spacings and strength functions (per spin state), and resonance absorption integrals were obtained:
