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

"Provides accurate predictions." Researchers make key breakthrough that could pave the way for next-gen energy source: 'A ...

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

Fission is the process by which an atom splits into two, ... Japan. The second was "Fat Man," which weighed 10,300 pounds (4,670 kg) and used plutonium-239 to set off a chain reaction.

If fission starts with a certain minimum amount — known as critical mass — of radioactive material such as uranium and plutonium, it causes a chain reaction, Zaijing Sun, a nuclear physicist ...

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

The outstanding characteristic of 9 of the fission products described in this report, as well as neptunium and plutonium, to be accumulated and tenaciously retained by the skeleton has a most ...

In modern weapons, plutonium fission ignites a second, more powerful stage in which hydrogen atoms undergo nuclear fusion, releasing even more energy. The U.S. hasn't made these pits in a ...

Nuclear fission, the process by which an atomic nucleus splits into smaller parts, is a fundamental process in nuclear physics.While the fission of heavy elements like uranium and plutonium is ...

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 ...

But that argument misses the point. 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 ...

The idea of leaving rapidly decaying nuclear waste is an important advantage. I’m not superstitious about fission power, but having waste products that last 100,000 years is a serious problem ...