Assertion: neutron | /r/HasSubevent | nuclide
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: Ratios of capture reactions to fission reactions are also worse (more captures without fission) in most nuclear fuels such as plutonium-239, making epithermal-spectrum reactors using these fuels less desirable, as captures not only waste the one neutron captured but also usually result in a nuclide that is not fissile with thermal or epithermal neutrons, though still fissionable with fast neutrons.