By the end of the year the physicist Werner Heisenberg had calculated that nuclear fission chain reactions might be possible. When slowed down and controlled in a "uranium machine" (nuclear ...

This causes the nucleus to break apart and release additional neutrons that can trigger further fission reactions, resulting in a chain reaction. This reaction is the basis for current nuclear ...

It raises key questions around coolant level measurement technologies, such as noncontacting gravity sensors vs. traditional ...

A US nuclear reactor has switched from Regular to Premium fuel with Southern Nuclear inserting four Lead Test Assemblies ...

The design of nuclear weapons aims to create a supercritical mass of fissile material in an instant, triggering a devastating chain reaction. Thermonuclear weapons, using both fission and fusion ...

It’s rarely appreciated just how much more complicated nuclear fusion is than nuclear fission. Whereas the ... challenge is to keep the nuclear chain reaction within safe bounds, nuclear fusion ...

The word “nuclear” conjures two images ... of radioactive waste for us to store for thousands of years. Fission is a chain reaction that can spiral out of control; but fusion reactors don ...

U.S. and Iran engage in talks over Iran's nuclear program amid escalating tensions and potential military threats.

Because Xinghuo is a fusion-fission plant, it will make use of both technologies in its production of energy. Nuclear fusion is a reaction in which two or more light nuclei combine to form a ...

U.S.-German startup Focused Energy, which aims to build power plants fueled by fusion, said on Monday it has signed an ...