Question

Internal contamination of the human body means radioactive material is inside the human body. Explain how the risk from internal contamination is different to the risk from external irradiation by a source of alpha radiation

Answer 1

Internal contamination means radioactive material is inside the body, posing higher risks due to proximity to organs. External irradiation with alpha radiation is less harmful as alpha particles have low penetration and can be stopped by skin or a sheet of paper ..

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