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Additional
Neutron reflector
English Wikipedia - The Free Encyclopedia
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Neutron reflector
A
neutron reflector
is any material that
reflects
neutrons
. This refers to
elastic scattering
rather than to a
specular reflection
. The material may be
graphite
,
beryllium
,
steel
,
tungsten carbide
, or other materials. A neutron reflector can make an otherwise
subcritical
mass of
fissile material
critical, or increase the amount of
nuclear fission
that a
critical or supercritical mass
will undergo. Such an effect was exhibited twice in accidents involving the
Demon Core
, a subcritical
plutonium
pit
that went
critical
in two separate fatal incidents when the pit's surface was momentarily surrounded by too much neutron reflective material.
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