The "Fat Man" atomic bomb, dropped on Nagasaki, Japan, on August 9, 1945, remains one of the most significant and terrifying ...

This self-sustaining reaction is known as "criticality." Fission bombs. ... (4,670 kg) and used plutonium-239 to set off a chain reaction. It was dropped on Nagasaki on Aug. 9, 1945.

How did Iran build a bomb, what are enriched uranium and plutonium, what role do centrifuges play, and how would the ...

Physicists have solved a long-standing puzzle about mercury’s nuclear fission by using a five-dimensional model that ...

A five-dimensional model has successfully predicted the asymmetric fission of mercury isotopes, offering new insights into ...

Compared to the plutonium still contained in CANDU spent fuel, the plutonium in the fresh fuel intended to be used in Moltex’s reactors would be far more accessible because it is no longer mixed with ...

Based on studying the prompt fission neutron spectrum of the induced fission of plutonium-240, researchers at LANSCE have found discrepancies with nuclear data libraries, especially on the energy ...

Then some of the plutonium would fission, yielding energy and creating more atomic fuel. Theoretically, the process might continue until all the 11-238 is consumed.

The direct introduction into the lungs of soluble compounds of the carrier-free fission products, and neptunium and plutonium, demonstrated that the radioelements that were not absorbed from the ...