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HELIOS calculations for UO{sub 2} lattice benchmarks

Technical Report ·
DOI:https://doi.org/10.2172/307944· OSTI ID:307944
Calculations for the ANS UO{sub 2} lattice benchmark have been performed with the HELIOS lattice-physics code and six of its cross-section libraries derived from ENDF/B-VI Release 3. The results obtained from these comparisons suggest that further refinement may be needed to the cross sections for {sup 238}U. They also suggest that different group structures among the libraries produce a small but consistent reactivity bias.
Research Organization:
Los Alamos National Lab., NM (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
307944
Report Number(s):
LA-UR--98-2764; CONF-981003--; ON: DE99001650
Country of Publication:
United States
Language:
English