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Forum: Processes Involving Optical Photons
Re: Question snell law between water and air (Yusuf)
Re: Feedback Re: snell law between water and air (Gumplinger Peter)
Re: Question Re: snell law between water and air (Yusuf)
Re: Feedback Re: snell law between water and air (Gumplinger Peter)
Re: None Re: snell law between water and air (Yusuf)
Date: 06 Jan, 2013
From: Gumplinger Peter <Gumplinger Peter>

> Hi Peter, I'm simulating Cerenkov light produced from electron beam
> (which validated dosimetrically against measured depth doses and
> profile) into a water box. The photons produced by Cherenkov have an
> inherent polarization perpendicular to the cone's surface at production.
> On the other hand, the direction of the electron movement inside the
> water is random. So I assumed that the resulted light is randomly
> polarised, is this acceptable ?

I don't know ... that's why we have MC to convolute. If you want to test that G4 does what you expect it to do, you've got to start with the simplest situation that you can be sure you know how to predict in your head. What you have is already quite a bit more 'convoluted'.

> I believe both the electron movement
> and Cerenkov light polarisation is internally implemented in Geant4(i.e
> the user can't change them). is this true?

Correct - no need to interfere.

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