Scintillation: Birks Constant

[fzeiser]

So, the paper I found called "Nonproportionality of Scintillator Detectors: Theory and Experiment. " seems reasonable to use.
They have simulated how the electrons are stopped in the material and compared to measurements.

They get the following parameters:

(dE/dx)ONS = 36.4 MeV/cm - This energyloss seems to be pretty standard and due to the colomb force, so it is probably already in the physics of GEANT4.

(dE/dx)Birks = 392 MeV/cm

efficiency by which the free electrons and holes are formed during the cascade = 18 %.

Now we'll just have to figure out how this translates to what GEANT4 wants as input.

• Gry