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Output factors for large fields using diodes
Shielded Si diodes for compensation
of photon energy dependence.
0.7
Incident beam direction
Scattered (low-
energy) photons
- Plastic
In PTW photon diodes
the backscatter shield
is made of steel instead.
Silicon chip (2.3 g/cm
3
)
Based on figure by Eklund
et al
[6]
describing IBA Dosimetry diodes (EFD/PFD)