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geometry function
2D anisotropy function
radial dose function
dose rate constant
( )
(
)
0 0
,
( , )
( ) ( , )
,
X
K
X
X
G r
D r
S
g r F r
G r
q
q
q
q
=
slide adapted from Luc Beaulieu
TG-43 2D F
o
r
m
a
l
i
s
m
source strength