To trigger this explosion, the fissile material must reach a , where a self-sustaining chain reaction occurs. In modern designs, this is often achieved through:
The Devastating Effects of Nuclear Weapons - The MIT Press Reader atomic explosion
: Shooting one piece of uranium into another to create a supercritical mass (used in the "Little Boy" bomb). To trigger this explosion, the fissile material must
The following overview summarizes the scientific principles, historical context, and immediate physical effects of an atomic explosion. To trigger this explosion