Home / Store / Journals / Electronic Articles / Nuclear Science and Engineering / Volume 8 / Number 6
G. E. Hansen, H. C. Paxton, D. P. Wood
Nuclear Science and Engineering
Volume 8 / Number 6 / December 1960 / Pages 570-577
Format:electronic copy (download)
Critical configurations have been established with enriched uranium in the form of squat 15.0-in. diameter cylinders and elongated 3.24-in. diameter cylinders. These cores were reflected by depleted uranium, polyethylene, graphite, and water; also, the squat cylinder was unreflected and reflected by beryllium of various thicknesses. Critical systems of plutonium were squat 6.0-in. diameter cylinders and elongated 2.25-in. diameter cylinders reflected by normal uranium, graphite, water, and in one case, polyethylene. Observed critical heights and diameters were corrected to correspond to standard enriched-uranium and plutonium densities and concentrations. These are tabulated along with effective extrapolation distances.
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