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File:Partially-reflected-plutonium-sphere.jpeg

Partially-reflected-plutonium-sphere.jpeg(471 × 363 pixels, file size: 56 KB, MIME type: image/jpeg)
Description A sphere of plutonium surrounded by neutron-reflecting blocks of tungsten carbide. A re-creation of the August 21, 1945 criticality accident at Los Alamos to measure the radiation produced when an extra block was added, making the mass supercritical.
Date 2 October 1945
Source From LANL's report on criticality accidents, 2000, http://www.csirc.net/docs/reports/la-13638.pdf PDF at http://www.csirc.net/library/la_13638.shtml
Author Los Alamos National Laboratory
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( Reusing this file)
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