Journal
NUCLEAR DATA SHEETS
Volume 148, Issue -, Pages 189-213Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.nds.2018.02.003
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Funding
- National Nuclear Security Agency of the U.S. Department of Energy [DE-AC52-06NA25396]
- U.S. Department of Energy [DE-AC05-00OR22725]
- U.S. Department of Energy Nuclear Criticality Safety Program
- Office of Nuclear Physics, Office of Science of the U.S. Department of Energy [DE-AC02-98CH10886]
- Brookhaven Science Associates, LLC
- [DE-AC52-07NA27344]
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The CIELO collaboration has studied neutron cross sections on nuclides that significantly impact criticality in nuclear technologies - U-235,U-238, Pu-239, Fe-56, O-16 and H-1 - with the aim of improving the accuracy of the data and resolving previous discrepancies in our understanding. This multi-laboratory pilot project, coordinated via the OECD/NEA Working Party on Evaluation Cooperation (WPEC) Subgroup 40 with support also from the IAEA, has motivated experimental and theoretical work and led to suites of new evaluated libraries that accurately reflect measured data and also perform well in integral simulations of criticality. This report summarizes our results on cross sections and preliminary work on covariances, and outlines plans for the next phase of this collaboration.
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