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Division Spotlight
Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
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
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.
Noriaki Nakao, Shun-ichi Tanaka, Takashi Nakamura, Kazuo Shin, Susumu Tanaka, Hiroshi Takada, Shinichiro Meigo, Yoshihiro Nakane, Yukio Sakamoto, Mamoru Baba
Nuclear Science and Engineering | Volume 124 | Number 2 | October 1996 | Pages 243-257
Technical Paper | doi.org/10.13182/NSE96-A28575
Articles are hosted by Taylor and Francis Online.
Neutron spectra in the energy range above 10-4 eV transmitted through iron shields succeedingly are measured with a BC501A liquid scintillation detector and the Bonner Ball detector using quasi-monoenergetic neutron sources generated via the 7Li(p,n) reaction by 43- and 68-MeV protons. Using the collimated source neutrons, the spectra are obtained on the neutron beam axis and at off-center positions. The calculations using the MORSE-CG and DOT3.5 codes with the DLC119 group cross-section data sets as well as the HETC-KFA2 code are carried out and compared with the measurements. The spectra calculated with the Monte Carlo code MORSE-CG and the DLC119 data agree with the measurements on the whole in the energy region above a few mega-electron-volts. It, however, is found that a few orders of Legendre expansion fail to reproduce the measurements at the position dominated by the neutrons scattered at a large angle. The calculations with the two-dimensional discrete ordinates code DOT3.5 and the DLC119 data also agree with the measurements in the overall energy region, though the restricted numbers of angular quadrature and a few orders of Legendre expansion led to the disagreement with the measurements at the off-center positions or in the neutron peak energy region. The comparison among the calculations with the Monte Carlo code HETC-KFA2 and the measurements show that the contribution of elastic scattering is very important in the intermediate energy region, and the treatment of the angular distribution of the elastic scattering reaction in the HETC-KFA2 code should be modified.
