Physics Bucharest 2017
Protons: basic physics
Photons (15 MV X-rays)
100
80
60
200 MeV protons
40
20
8 MV photons
0 Relative effective dose / %
2 4 6 8 10 12 Depth in water / cm
Protons
100
Relative dose
80
20 MeV electrons
60
90
120 MeV
40
Depth in water (cm)
20
Relative effective dose / %
0
2 4 6 8 10 12 Depth in water (cm)
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