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Feedback Re: Problem with absorption length 

Forum: Processes Involving Optical Photons
Re: Question Problem with absorption length (Maxim Laletin)
Re: Feedback Re: Problem with absorption length (Gumplinger Peter)
Re: Feedback Re: Problem with absorption length (Maxim Laletin)
Date: 06 May, 2013
From: Gumplinger Peter <Gumplinger Peter>

> Of course I meant that in this case observable path fluctuates the
> average value. However if I set a table of absorption length values
> corresponding to energy an actual path length value lies far from the
> average meaning even in series of runs. Moreover this path is very small
> in comparison with submitted table value.
> 
> What can be incorrect?

Maybe something else limits the paths of your optical photons. If you can debug the Geant4 source, find out what path lengths is returned at:

http://www-geant4.kek.jp/lxr/source/processes/optical/src/G4OpAbsorption.cc#L148

Find out what is sampled for G4OpAbsorption at:

http://www-geant4.kek.jp/lxr/source/processes/management/src/G4VProcess.cc#L94

and finally what length is it at:

http://www-geant4.kek.jp/lxr/source/processes/management/src/G4VDiscreteProcess.cc#L96

Peter

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