Assertion: deuterium's neutron | /r/CapableOf | sustain the chain reaction
Facets:
Source sentences:
text: The main advantage of heavy-water moderator over light water is the reduced absorption of the neutrons that sustain the chain reaction, allowing a lower concentration of active atoms (to the point of using unenriched natural uranium fuel).
text: More neutrons are released than are needed to maintain the chain reaction; when uranium-238 absorbs just the excess, plutonium is created, which helps to make up for the depletion of uranium-235.