|Message: Re: Transmission probability in an optical surface||Not Logged In (login)|
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> I have a question about transmission at an optical surface. > My surface is �ground front painted� which is a lambertian reflector. My > material is dielectric � dielectric .
You can give such a surface (via G4OpticalSurface) a G4MaterialPropertiesTable with both "TRANSMITTANCE" and "REFLECTIVITY" (the probabilities of transmission and transmission) specified. The remainder of the sum of these two is the probability of absorption on the surface.
> The absorption length is 100 cm for my CsI scintillator.
This is the bulk absorption length inside the medium.
> Is there a way I can calculate the transmission > probability of the incident particles (i.e. the optical photons) ?
The transmission is an empirical input parameter for the surface in G4.
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