4. Interaction of γ-rays in matter
Electromagnetic radiation γ has no electric charge. They interact in matter according to three main processes: the photoelectric effect, the Compton effect and the creation of e + e pairs - . The relative importance of these three effects depends on the energy of the radiation γ and the atomic number Z of the attenuating medium (figure 8 ).
4.1 Attenuation of γ radiation in matter
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Interaction of γ-rays in matter
Neutron interaction
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