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

1930-35

Related forms

slow-neutron, adjective

Examples from the web for slow neutron

Some heavy nuclei undergo fission upon the absorption of a slow neutron, and some do not.
Will here be applied to the resonances seen in slow neutron and proton scattering.

British Dictionary definitions for slow neutron

slow neutron

noun

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

slow neutron in Science

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.