The mass attenuation coefficients (/) for 1.5 MeV photons inconcrete ( = 2.35 g/cm 3 ) and
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The mass attenuation coefficients (μ/ρ) for 1.5 MeV photons inconcrete (ρ = 2.35 g/cm3) and lead (ρ=11.4 g/cm3) are both about 0.5 cm2/g. How thick must concrete or lead shielding be in order to absorb 99% of these 1.5 MeV γ-rays?
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so concrete 117 cm 1 and lea...View the full answer
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