fissile material Any isotope that is capable of undergoing nuclear fission. Sometimes the term is restricted to apply only to isotopes that are capable of undergoing fission upon impact with a slow neutron (e.g. uraniums-233, uranium-235, and plutonium-239. Related category ATOMIC AND NUCLEAR PHYSICS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |