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U.S. Department of Energy
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Critical Dimensions Of Aqueous Solutions Of U(37)O2F2

Technical Report ·
DOI:https://doi.org/10.2172/1021431· OSTI ID:1021431
The critical dimensions of a sphere of an aqueous solution of 37-wt%-{sup 235}U-enriched uranyl fluoride and of several unreflected and water-reflected cylinders at a number of chemical concentrations were determined experimentally. The critical uranium concentration in the unreflected sphere was 51.93 g/liter. The neutron multiplication factor of the sphere was calculated by the DSN transport code in the S{sub 4} approximation to be 1.0100; the relative fission-rate distribution along a diameter, also calculated by DSN, compared favorably with measurements. The results from the cylinders, although less detailed and less accurate, can be generalized for nuclear criticality safety guidance. The dimensions of equivalent spheres, infinite cylinders, and infinite slabs were estimated for selected chemical concentrations by equating bucklings.
Research Organization:
Oak Ridge Y-12 Plant (Y-12), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Defense Programs (DP)
DOE Contract Number:
AC05-00OR22800
OSTI ID:
1021431
Report Number(s):
Y/DR-135
Country of Publication:
United States
Language:
English