slow neutron

noun Physics.

a neutron with low kinetic energy, especially one slowed by the moderator in a nuclear reactor.
Also called thermal neutron.

Origin of slow neutron

First recorded in 1930–35

OTHER WORDS FROM slow neutron

slow-neu·tron, adjective

Words nearby slow neutron

slow infection, slow loris, slow march, slow match, slow motion, slow neutron, slow on the uptake, slow spot, slow time, slow up, slow virus

British Dictionary definitions for thermal neutrons (1 of 2)

thermal neutrons

pl n

slow neutrons that are approximately in thermal equilibrium with a moderator. They have a distribution of speeds similar to that of the molecules of a gas at the temperature of the moderator. Data concerning nuclear interactions are often given for standard thermal neutrons of speed 2200 metres per second, which is approximately the most probable speed at normal laboratory temperatures

British Dictionary definitions for thermal neutrons (2 of 2)

slow neutron

noun

physics a neutron having a kinetic energy of less than 100 electronvolts

Scientific definitions for thermal neutrons

slow neutron
[ slō ]

A neutron that is in thermal equilibrium with the surrounding medium, especially one produced by fission in a nuclear reactor, and slowed by a moderator. The uranium 235 used in thermal nuclear reactors undergoes fission more readily when struck by slow neutrons than when struck by the fast neutrons released by fission. Also called thermal neutron Compare fast neutron.