Assertion: heavy water's neutron | /r/HasProperty | slowed
Facets:
value: most effectively
type: DEGREE
value: the more
type: DEGREE
Source sentences:
text: The newly released fast neutrons, moving at roughly 10% of the speed of light, must be slowed down or "moderated," typically to speeds of a few kilometres per second, if they are to be likely to cause further fission in neighbouring 235U nuclei and hence continue the chain reaction.
text: When a reactor is starting up, the neutron population is increased slowly in a controlled manner, so that more neutrons are produced than are lost, and the nuclear reactor becomes supercritical.
text: If the collisions between neutrons and nuclei are elastic collisions, it implies that the closer in size the nucleus of an atom is to a neutron, the more the neutron will be slowed.
text: this high speed , the chance of a neutron being captured by another 92U235 nucleus is very small , If the neutron is slowed , its chance of capture is much better .
text: The enriched uranium is then hit with neutrons that have been slowed down, or moderated, by sending them through conventional water.
text: Neutrons are most effectively slowed by colliding with the nucleus of a light atom, hydrogen being the lightest of all.
text: Neutrons are slowed when they lose kinetic energy in a collision.
text: When a reactor’s neutron population remains steady from one generation to the next (creating as many new neutrons as are lost), the fission chain reaction is self-sustaining and the reactor's condition is referred to as "critical".
text: If more neutrons are released than are lost or absorbed by other materials, the chain reaction is said to achieve criticality.