Which of the following is the most penetration beam?
The order of penetration power is ? rays> electrons> a paicles. Here the 18MeV photon will have more energy than 8MeV photon. Ref: Essentials of Environmental Health, By Robe H. Friis, 2011, Page 191
Electron beam
8 MV photons
18 MV photons
Proton beam