Assertion: heavy water | /r/ObjectUse | used in reactor
Facets:
value: as the moderator
type: MANNER
Source sentences:
text: Heavy water is used in reactors because its benefits are similar to light water, but since it contains deuterium atoms, its neutron absorption cross section is much lower.
text: Heavy water is also used in reactors used to breed plutonium.
text: It is used in some reactors as the moderator since it is much more efficient at slowing fast neutrons than ordinary water, thus enabling unenriched uranium to be used as the fuel.