English edit

 
 
English Wikipedia has an article on:
Wikipedia

Etymology edit

So called because of its involvement in two fatal criticality accidents at the Los Alamos Laboratory in 1945 and 1946.

Proper noun edit

the demon core

  1. (historical) A spherical subcritical mass of plutonium manufactured during World War II by the United States as a fissile core for an early atomic bomb.

Translations edit