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Figure 5.2: Illustraion of Neutron Radiography and
Imaging (NURI) facility at TRIGA PUSPATI Reactor.
trons from the source. The second part is an aperture
located in the collimator, it is applied for shaping the
geometry of neutron intake from source, in this case
reactor core. The third part is the recorder. It is can be
the film consists of emulsion materials or the charge
couple device (CCD) camera or imaging plate.
5.2.1 Collimator
Neutron source is determined by geometry of aper-
ture located at the entrance of collimator. The aperture
shape can be circular or rectangular, depending on the
final shape of neutron beam required. The combina-
tion of rectangular with circular also possible as long as
the output of neutron beam from collimator has almost
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