Radiation Sources interaction with polymer

Filled polymers play a role in primary and secondary protection against y-radiation. The photons interact with matter by photoelectric absorption and Rayleigh scattering. For primary partitions which separate an unshielded source from its surroundings, lead bricks or concrete blocks are used. For the secondary partitions which protect personnel from radiation, a protective shield or vest can be made by incorporating metal particles or lead oxide in rubber or plastic. Such shields are used by physicians and dentists or their patients to limit exposure to x-rays. The radiation... 

Figure 2.3 Impact of ionizing radiation on polymers. (A) Simplified scheme of radiation-induced events in polymers. (B and C) Comparison of the interaction of VVphotons and electrons with polymers. Photon beams are exponentially attenuated along the beam direction, whereas electrons are scattered and slowed down along their path through the polymer fdm. Source Adapted from Drobny [2], with permission from Elsevier Ltd.

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