When slowed down and controlled in a "uranium machine" (nuclear reactor), these chain reactions could generate energy; when uncontrolled, they would be a "nuclear explosive" many times more ...

but under control it could produce a steady flow of energy. (If the chain reaction started with uranium, it also created a byproduct, plutonium, a better fuel for a nuclear weapon.) At the ...

This chain reaction is what makes nuclear ... produce energy in a stable manner. However, in a nuclear weapon, the reaction is deliberately uncontrolled to maximize the energy released in a ...

But one of the first things on the list was to learn whether it was possible to create and control a nuclear chain reaction at all. The Project decided to consolidate this effort in one location.

That was the thought racing through physicist Francis Perrin’s mind in May 1972. He was examining a dark piece of uranium ore ...

In an increasingly interconnected strategic environment, regional nuclear stability can no longer be analyzed in isolation.

the first self-sustaining nuclear chain reaction transpired in 1942. In a wooden frame, graphite blocks interspersed with uranium comprised the ‘pile’ — the nuclear reactor. Above, a control rod hung ...

Still, it also acknowledged the importance of arms control efforts: The Guidance reinforces that deterrence alone will not address strategic dangers. Arms control, risk reduction, and nuclear ...

What’s the difference between nuclear fission and nuclear fusion ... No, because fusion energy production is not based on a chain reaction, as is fission. Plasma must be kept at very high temperatures ...