Definitions for "Control Rods"
Keywords:  reactor, fission, neutron, rods, boron
(see fuel rods and control rods)
A rod incorporating neutron-absorbing materials, such as boron or cadmium. Control rods can be moved in and out of holes in the core of a reactor in order to control the reaction rate precisely.
Neutron-absorbing material inserted into spaces between fuel assemblies in nuclear reactors to regulate fission reaction.