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Photon Energy
(MeV)
Relative number of interactions (%)
t s k
0.01
0.026
0.060
0.150
4.00
10.00
24.00
100.00
95
50
7
0
0
0
0
0
5
50
93
100
94
77
50
16
0
0
0
0
6
23
50
84
Table illustrating importance of various interactions with energy in H
2
O
*
*
F. Khan, The Physics of Radiotherapy
Photons interaction with matter