Page 222 - Radiation Safety
P. 222
Electromegnetic Radiation : Photon
E.M. radiation (photons), X-rays originate from orbits, from excited
nucleus; normally rays have higher E than X-rays
Characteristic X-rays - de-excitation or transition of electrons in orbits of
atoms
Bremsstrahlung X-rays - braking radiation, increase with Z
Photon interactions: Photoelectric, Compton, and Pair production, all
three interactions increase with Z
Long range, an external hazard but not a great internal hazard
Use high-Z materials to shield against photons
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