Reference, Questions and Help => Nuke Q&A => Definitions => Topic started by: Rennhack on Nov 25, 2005, 12:32
Title: Poison, neutron
Post by: Rennhack on Nov 25, 2005, 12:32
In reactor physics, a material other than fissionable material in the vicinity of the reactor core that will absorb neutrons. The addition of poisons, such as control rods or boron, into the reactor is said to be an addition of negative reactivity.