Whereas light-water reactors (LWR: including PWR, BWR and SCWR) employ regular water as a neutron moderator, fast reactors do not. The neutrons that are emitted by 235 U and other isotopes when ...

Most new nuclear fission reactors being built today are of the light water reactor (LWR) type, which use water for neutron moderation into thermal neutrons as well as neutron capture. While ...

Where appropriate, IAEA supports countries in the development of neutron sources (research reactors or accelerators) and provides a coordinating role in technology development. One example is a ...

Los Alamos National Laboratory (LANL) has completed a series of first-of-a-kind criticality experiments intended to provide ...