|Nov26-12, 08:28 AM||#1|
Iron to block radiation
Does anyone know how Iron compares to lead as a medium to block / absorb radiation? Do you know what wavelengths or spectrum iron is most effective against?
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|Nov26-12, 11:32 AM||#2|
Photon radiation? In other words, X-rays and gamma radiation?
Lead is better per mass, and has a higher density in addition (so it is much better per length).
For high photon energies (>100keV), the radiation length is the relevant quantity. You can find numbers at the particle data group.
Iron: Radiation length 13.84 g -2 or 1.757 cm
Lead: Radiation length 6.37 g cm-2 or 0.5612 cm
For low-energy photons, it depends on the energy.
|gamma rays, infrared, lead, radiation, ultraviolet|
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