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Example – Distance to next photon interaction
Dublin 2018
0
50
100
150
200
250
0.0 0.1 0.2
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
R
Step-length (cm)
36.96 cm
Move 36.96 cm to
the next interaction
site for the photon
R
r
ln
1
−=
Number between 0 & 1
0.33
25