Page 88 - bukuneutron

fore, monochromator is used to obtain monochromatic
neutron beam from a white spectrum of neutron. Monochro-
mator is used to get single energy of neutrons from
wide neutron spectrum. Layout set up of neutron diffrac-
tion instrument is shown in Figure 4.1.

Figure 4.1: Typical set up of residual stress instrument utilising

neutron diffraction technique at a nuclear reactor.

Incoming neutron begins in the diffraction process
once it is extracted through pre-collimator from the neu-
tron guide mirror or tube. Focusing and streaming of
neutron beam by the slit before entering the object un-
der testing. Diffracted beam than recorded by the de-
tector, in the illustration of Figure 4.1, single 3He de-

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