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Figure 5.1: Illustraion of neutron source, collimator,
object and detector used for neutron radiography.

mator. These materials would reduce some portion of
gamma radiation and fast neutron.

5.2 Design of devices

Main part of neutron imaging facility can be divided
into three components. First components is neutron
source. This can be thermal neutrons or fast neutron
or epi-thermal or even cold neutrons sources. Differ-
ent energy of neutron require distinguishes design of
devices. The geometry of neutron from the origin must
be determined by design the appropriate intake of neu-

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