Page 26 - bukuneutron

Figure 1.7: Illustration of neutron elastic scattering
when neutron intract with the target.

In elastic scattering, the target will move significantly
from initial location. In inelastic scattering, the energy
after collision is smaller than the energy before col-
lision. The angle of scattering is determined by the
value of neutron cross section. Neutron can be scat-
tered by the atom it has collided on a material with a
large neutron cross section value. In general, scatter-
ing of neutron can occur in the forward or backward
direction. The detection of neutron whether in forward
or backward provide a distinctive application.

1.6.2 Neutron thermalization

The energy of fast and slow down neutrons can be re-
duced to epithermal neutron at energy of 1 eV. Energy
of neutrons can be reduced further to reached thermal
neutron at which the thermal equilibrium at room tem-
perature is achieved. The kinetic energy of neutron

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