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Nuclear Criticality Safety
NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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Fusion Science and Technology
Latest News
Taking shape: Fusion energy ecosystems built with public-private partnerships
It’s possible to describe fusion in simple terms: heat and squeeze small atoms to get abundant clean energy. But there’s nothing simple about getting fusion ready for the grid.
Private developers, national lab and university researchers, suppliers, and end users working toward that goal are developing a range of complex technologies to reach fusion temperatures and pressures, confounded by science and technology gaps linked to plasma behavior; materials, diagnostics, and electronics for extreme environments; fuel cycle sustainability; and economics.
F.-J. Hambsch, I. Ruskov
Nuclear Science and Engineering | Volume 156 | Number 1 | May 2007 | Pages 103-114
Technical Paper | doi.org/10.13182/NSE07-A2689
Articles are hosted by Taylor and Francis Online.
The 10B(n,0)/10B(n,1) branching ratio has been measured at the Geel linear accelerator based time-of-flight spectrometer in the incident neutron energy range from 0.1 keV up to 2 MeV. A twin Frisch-grid ionization chamber has been used with two very thin 10B samples mounted back-to-back on the common cathode. This type of ionization chamber made it possible to measure both the energy and the angular distribution of the emitted reaction products (alpha particles and 7Li nuclei) with a clear separation of both reaction channels: emission to the ground state (0) and first excited state (1). The branching ratio 10B(n,0)/10B(n,1) was found to be in good agreement with the ENDF/B-VI evaluation up to ~1 MeV incident neutron energy. At higher energies (>1 MeV), a clear deviation is observed. The present branching ratio data have been entered into the ongoing International Atomic Energy Agency Coordinated Research Project on "Improvement of the Standard Cross Sections for Light Elements." A preliminary R-matrix calculation reproduces the measured branching ratio in the whole energy range up to ~2 MeV.