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Title: Analysis of central worths and other integral data from the Los Alamos benchmark assemblies

Technical Report ·
DOI:https://doi.org/10.2172/6315282· OSTI ID:6315282

We have compared theoretical calculations, based on ENDF/B-V and recent revisions, with integral data measured on the Los Alamos unmoderated critical assemblies Godiva, Jezebel, Flattop-25, and Flattop-Pu. The experimental data included in this analysis are multiplication factors k/sub eff/ and (in most cases) both fission rates and central-worth ratios for /sup 235/U, /sup 238/U, /sup 237/Np, and /sup 239/Pu. Based on this comparison, we conclude that there is a need for a new /sup 235/U evaluation, and increased accuracy is needed in certain integral measurements.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
6315282
Report Number(s):
LA-10230-MS; ON: DE85005233
Resource Relation:
Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
Country of Publication:
United States
Language:
English