Molten Salt Reactors (MSRs) are nuclear fission reactors in which either the fuel and/or the coolant is a molten salt. Molten salt is salt which liquifies at elevated temperatures and can store ...

As scientists initiate the process of artificial nuclear decay, uranium-238 atoms absorb neutrons in the reactor core, becoming relatively more fissionable plutonium-239 atoms. When a plutonium ...

It either must be enriched—made more concentrated in a rare form of uranium (U-235)—or converted into plutonium (Pu-239). Heavy water can play a role in breeding weapons-grade plutonium from ...

is harder to use for weapons purposes than uranium-235 or plutonium-239. This means there is less of a risk its wider use will pose a proliferation risk. The thorium fuel cycle also produces less ...

that the periods which have been ascribed to elements beyond uranium are also due to light elements. From the chemical evidence, the two short periods (10 sec. and 40 sec.) so far ascribed to 239 ...