Assertion: heavy water's neutron | /r/HasProperty | needed
Facets:
value: to achieve a critical mass state
type: PURPOSE
Source sentences:
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.
text: Keeping the reactor in the zone of chain reactivity where delayed neutrons are necessary to achieve a critical mass state allows mechanical devices or human operators to control a chain reaction in "real time"; otherwise the time between achievement of criticality and nuclear meltdown as a result of an exponential power surge from the normal nuclear chain reaction, would be too short to allow for intervention.
text: Since neutrons traveling through heavy water split atoms more efficiently, less uranium should be needed to achieve a critical mass; that’s the minimum amount of uranium required to start a spontaneous chain reaction of atoms splitting in rapid succession.
text: Since neutrons traveling through heavy water split atoms more efficiently, less uranium should be needed to achieve a critical mass; that’s the minimum amount of uranium required to start a spontaneous chain reaction of atoms splitting in rapid succession.
text: Since neutrons traveling through heavy water split atoms more efficiently, less uranium should be needed to achieve a critical mass; that’s the minimum amount of uranium required to start a spontaneous chain reaction of atoms splitting in rapid succession.
text: Since neutrons traveling through heavy water split atoms more efficiently, less uranium should be needed to achieve a critical mass; that’s the minimum amount of uranium required to start a spontaneous chain reaction of atoms splitting in rapid succession.