DETECTION OF NEUTRONS
Neutrons are uncharged particles and
produce a negligible amount of ionization in passing through matter with the
result that they can be detected directly in any instrument whose action
depends upon the ionization caused by the particle which enters it. The
detection of neutron depends on secondary effects which result from their
interaction with nuclei.
Some of the reactions are
(1) The absorption
of a neutron by a nucleus with the prompt emission of a fast charged particles
(2) The absorption
of a neutron with fission of resulting compound nucleus.
(3) The absorption
of a neutron with the formation of a radioactive nuclide whose quantity can be
measured.
(4) The scattering
of a neutron by a light nucleus such as proton as a result the light nuclei
produce ionization.
(3) The absorption
of a neutron with the formation of a radioactive nuclide whose quantity can be
measured.
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