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: Outside the body an [[organism]] can be protected from [[Alpha Particle|alpha radiation]] by keeping a distance greater than 5cm or by covering any bare skin.
: Inside an [[organism]] [[Alpha Particle|alpha particle]]s are the most dangerous as they are highly [[Ionising Radiation|ionising]] and there is nothing inside an [[organism]] to block them [[Ionising Radiation|ionising]] biological [[molecule]]s like [[DNA]]. Every precaution must be taken not to [[Radioactive Contamination|contaminate]] the skin with the [[Alpha Particle|alpha]] source in case it finds its way into the body through a cut or the mouth.
: When handling a source of [[Alpha Beta Particle|alpha beta radiation]] the precautions which should be taken are::*Wear gloves- to prevent [[Radioactive Contamination|contamination]].:*Use tongs to handle the source, never touch it- to prevent [[Radioactive Contamination|contamination]].:*Aim the source away from any living [[organism]] - to prevent [[irradiation]].:*Store the source in a sealed container- to prevent [[Radioactive Contamination|contamination]] and [[irradiation]].
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