Gamma and X-Rays
- Electromagnetic radiation emitted
from the nucleus or electron shells
- Photons are highly penetrating
(e.g. Co-60 gamma rays are used for cancer treatment)
- Unshielded photon sources can be
severe radiation hazards
![](https://afcf.umaryland.edu/ehs/public/uploads/UMB RadiationSafety/newslide24.jpg)
![](https://afcf.umaryland.edu/ehs/public/uploads/UMB RadiationSafety/newslide24.jpg)