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Critical Masses of Cylinders of Plutonium Diluted with Other Metals

D. P. Wood, C. C. Byers, L. C. Osborn

Nuclear Science and Engineering / Volume 8 / Number 6 / Pages 578-587

December 1960

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Critical masses of 6-in. diameter cylinders of plutonium diluted in various volume ratios with steel, aluminum, thorium, air, and depleted uranium were determined. The cores were in 0, 2, 4.5, or 7.5-in. thick uranium reflectors and in 2, 4.5, or 7.5-in. thick thorium reflectors. From these data, the equivalent spherical critical masses of plutonium have been estimated. An appendix gives reflector savings of undiluted plutonium for a variety of materials.

 
 
 
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