Image: Plutonium ring

Description: A weapons-grade ring of electrorefined plutonium, typical of the rings refined at Los Alamos and sent to Rocky Flats for fabrication. The ring has a purity of 99.96%, weighs 5.3 kg, and is approx 11 cm in diameter. It is enough plutonium for one bomb core. The ring shape helps with criticality safety (less concentrated material).
Title: Plutonium ring
Credit: Scanned from: Christensen, Dana (1995). "The Future of Plutonium Technology". Los Alamos Science (23): 170.
Author: Los Alamos National Laboratory
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Usage Terms: Public domain
License: Public domain
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