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Attenuation of X-Ray Radiation

Attenuation Coefficient | | Example Coefficients

Attenuation of the radiation intensity I of monochromatic (mono-energetic) rays while travelling through a homogeneous material with thickness d and attenuation coefficient μ:

I(d)=I0eμd
with eμd being the attenuation factor

What is the thickness of a material that absorbs exactly half of the rays intensity?

I/I0=eμd=0.5
D12=ln2μ
ln20.7


Attenuation Coefficient | | Example Coefficients

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