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Properties of the direct beam source
Four blurring steps:
1. Electron beam distribution
2. Electron scattering in target
3. Brems X-section angular
e
-
11
distribution
4. Coherent scatter in flattening
filter (affecting the view of the
source from downstream)
h
ν
-4
-2
2
4
0.2
0.4
0.6
0.8
1
dist [mm]
Convolved with one coherent
scattering event
Source distribution