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Figure 5.6: Illustraion of 6LiFZnS:Ag particles that form the
converter screen and their interaction with thermal neutron used
for neutron radiography camera.
6Li + n →3 H +4 He + 4.71MeV (5.2)
However, γ radiation with energy 4.71 MeV also
emitted simultaneously, therefore, some caution should
be taken to this high energy gamma radiation. Other
converter material has different interaction with neu-
tron as characterised in Table 5.1. In all cases, emit-
ting γ or any secondary radiation need to be consid-
ered because it will be damaging to human body.
The probability of interaction of a thermal neutron
104
