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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
Argonne’s METL gears up to test more sodium fast reactor components
Argonne National Laboratory has successfully swapped out an aging cold trap in the sodium test loop called METL (Mechanisms Engineering Test Loop), the Department of Energy announced April 23. The upgrade is the first of its kind in the United States in more than 30 years, according to the DOE, and will help test components and operations for the sodium-cooled fast reactors being developed now.
E. Johansson, E. Jonsson, M. Lindberg and J. Mednis
Nuclear Science and Engineering | Volume 22 | Number 2 | June 1965 | Pages 157-170
Technical Paper | doi.org/10.13182/NSE65-A20235
Articles are hosted by Taylor and Francis Online.
A series of experimental and theoretical investigations on neutron spectra in lattice cells has been started at the reactor R1. This report gives the results from the work on the first three cells. The cells consisted of uranium tubes surrounded by D2O. They were placed in the central vertical channel of the reactor. The neutron spectra from lead scatterers in the center of the tubes were measured with a fast chopper in the energy region from 0.01 to 100 eV. The beam spectrum from the lead piece was expected to correspond to the angular flux integrated over all angles. This was tested in an accessory experiment which gave some correction factors for the tube measurements. For the calculations the THERMOS code has been used. The energy region ranged from 0.00025 to 3.06 eV. Three scattering models for deuterium have been used—the free-gas model (D mass 3.595), the effective-width model, and the Nelkin model. With all three models the THERMOS code reproduced the thermal spectra within a few percent. The effective-width model and the Nelkin model also gave reasonable agreement in the epithermal region. The free-gas model, however, gave too high a ratio between the epithermal and the thermal neutron densities. The computation time required for a 20-space, 30-energy-group calculation on an IBM-7090 computer was about 4 min.