Assertion: heavy water | /r/HasProperty | effective
Facets:
value: for natural uranium reactors
type: TRANSITIVE-OBJECT
value: in moderating neutrons
type: LOCATION
value: without capturing them
type: MANNER
Source sentences:
text: Heavy water is so effective in moderating neutrons without capturing them that you don't even have to enrich the uranium to get a critical mass when you use heavy water (D2O) as the moderator.
text: Heavy water is a rare but natural form of water and an effective moderator for natural uranium reactors.