slow-neutron

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

slow-neutron, adjective
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World English Dictionary
slow neutron
 
n
physics a neutron having a kinetic energy of less than 100 electronvolts

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
slow neutron   (slō)  Pronunciation Key 
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.
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