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possible to interact with slow neutron because fast neu-
tron has not chance to interact with detector because
it is very energetic. Thermal and slow neutron are not
able to get through the Cadmium because threshold
or cut-off neutron energy for Cadmium is less that ep-
ithermal ranges, so the responds of detector only due
to the interaction with fast neutron.

Figure 6.1: Illustration showing the neutron detector
and detection approach when to measure neutron in
different energy ranges.

The measurement of neutron dose transferred to
the human cell is usually based on reading from neu-
tron survey meter as in-situ detection. There are sev-
eral neutron survey meter are available, such as the
one based on Bonner Sphere principle. This type of
neutron survey meter there is a polyethylene sphere

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