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Division Spotlight
Young Members Group
The Young Members Group works to encourage and enable all young professional members to be actively involved in the efforts and endeavors of the Society at all levels (Professional Divisions, ANS Governance, Local Sections, etc.) as they transition from the role of a student to the role of a professional. It sponsors non-technical workshops and meetings that provide professional development and networking opportunities for young professionals, collaborates with other Divisions and Groups in developing technical and non-technical content for topical and national meetings, encourages its members to participate in the activities of the Groups and Divisions that are closely related to their professional interests as well as in their local sections, introduces young members to the rules and governance structure of the Society, and nominates young professionals for awards and leadership opportunities available to members.
Meeting Spotlight
2027 ANS Winter Conference and Expo
October 31–November 4, 2027
Washington, DC|The Westin Washington, DC 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
Siting of Canadian repository gets support of tribal nation
Canada’s Nuclear Waste Management Organization (NWMO) announced that Wabigoon Lake Ojibway Nation has indicated its willingness to support moving forward to the next phase of the site selection process to host a deep geological repository for Canada’s spent nuclear fuel.
David Regnier, Olivier Litaize, Olivier Serot
Nuclear Science and Engineering | Volume 174 | Number 1 | May 2013 | Pages 103-108
Technical Note | doi.org/10.13182/NSE12-12
Articles are hosted by Taylor and Francis Online.
The average total prompt neutron multiplicity [nu with overbar] of 252Cf spontaneous fission is investigated as a function of the total kinetic energy TKE and the mass split of the fragments through the code FIFRELIN. This Monte Carlo device, already described in a previous work, aims at simulating the neutron evaporation from fission fragments. The observables and TKE and the light fragment mass AL are recorded from a sample of 107 fission events. The analyzed results show a value for the inverse of the slope [[partial differential][nu with overbar](TKE)/[partial differential]TKE]-1 equal to -11.0 MeV/n. In addition to this, the average number of neutrons per fission [nu with overbar](TKE, AL) is determined for every possible TKE and AL. For every fragment mass ratio, differences in behavior between [nu with overbar](TKE, AL) versus TKE and [nu with overbar](TKE) with no discrimination made with regard to AL are observed. Those differences are explained by the TKE dependency of fission yield. The approximation consisting of ignoring this TKE dependency of mass yield when calculating the [nu with overbar](TKE) slope is discussed. We estimate that such a calculation could lead to a significant bias on the absolute value of [partial differential][nu with overbar](TKE)/[partial differential]TKE and could explain the discrepancies between calculations found in the literature.
