928-929 / 2239
0
10
20
30
40
50
MeV
Target material,Z=74,Emission angle=10¡
0.001
0.01
0.1
1
10.
100.
1000.
barn/Sr
50MeV
25MeV
10MeV
5MeV
1
5
10
Numerical integration of X-sections and
attenuation data, results similar to Monte
Carlo
Beam energy spectra
analytical modeling
26
from Desobry & Boyer, MedPhys 21, 1994, p 1943
Simple models, parametric control of
spectral shape
(
)
1 2 3
, ,
E E
p p p
Ψ Ψ
=
0
10 20 30 40 50
0.05
0.1
0.5