Hard radiation

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Hard radiation is a term used to describe high-energy electromagnetic radiation, typically high energy X-rays or gamma rays. The term refers to the ability of the rays to penetrate a given thickness of material, typically a lead shield.

Hard radiation is able to cross 167 g/cm^-2 of lead (composed by p with energy greater than 1 GeV, μ with E>300 MeV and e and γ with E>10 GeV) [1]

[edit] See also

• Soft radiation
• Ultrasoft radiation